The Holy Spirit seems to be a Christian construct especially related to the Trinity. Where in the Torah and extra biblical writing would the idea of a Spirit, Prophesying or speaking in tongues, be explained? Is there any example or basis for this idea in Judaism?

• We have already seen the notion of the suffering Messiah, and appearance as a man, what about the idea of a Spirit of G-d?
• Are there any Old Testament scriptures that talk about the Holy Spirit?

1 In the beginning God created the heaven and the earth.
2 And the earth was without form, and void; and darkness was upon the face of the deep. And the Spirit of God moved upon the face of the waters.

Genesis 1:1-2 (KJV)

• If Genesis isn't enough the story of Moses and the 70 Elders in the Torah - Book of Numbers - is an example of the Holy Spirit being put not only on Moses but onto the appopinted elders all of whom start speaking and prophesying when it happens.
• Interestingly two of the elders who missed the gathering but were still in the main camp still had the spirit poured out onto them and are recorded to have started prophesying there!

16 And the Lord said unto Moses, Gather unto me seventy men of the elders of Israel, whom thou knowest to be the elders of the people, and officers over them; and bring them unto the tabernacle of the congregation, that they may stand there with thee.
17 And I will come down and talk with thee there: and I will take of the spirit which is upon thee, and will put it upon them; and they shall bear the burden of the people with thee, that thou bear it not thyself alone.

Numbers 11:16-17 (KJV)

25 And the Lord came down in a cloud, and spake unto him, and took of the spirit that was upon him, and gave it unto the seventy elders: and it came to pass, that, when the spirit rested upon them, they prophesied, and did not cease.
26 But there remained two of the men in the camp, the name of the one was Eldad, and the name of the other Medad: and the spirit rested upon them; and they were of them that were written, but went not out unto the tabernacle: and they prophesied in the camp.
27 And there ran a young man, and told Moses, and said, Eldad and Medad do prophesy in the camp.
28 And Joshua the son of Nun, the servant of Moses, one of his young men, answered and said, My lord Moses, forbid them.
29 And Moses said unto him, Enviest thou for my sake? would God that all the Lord's people were prophets, and that the Lord would put his spirit upon them!

Num 11:16-17 (KJV)

• A number of other old testament writings also refer to the Holy Spirit or Spirit of G-d.

24 And the woman bare a son, and called his name Samson: and the child grew, and the Lord blessed him.
25 And the Spirit of the Lord began to move him at times in the camp of Dan between Zorah and Eshtaol.

Judges 13:24-25 (KJV)

20 And Saul sent messengers to take David: and when they saw the company of the prophets prophesying, and Samuel standing as appointed over them, the Spirit of God was upon the messengers of Saul, and they also prophesied.
21 And when it was told Saul, he sent other messengers, and they prophesied likewise. And Saul sent messengers again the third time, and they prophesied also.

1 Samuel 19:20-21 (KJV)

10 Create in me a clean heart, O God; and renew a right spirit within me.
11 Cast me not away from thy presence; and take not thy holy spirit from me.
12 Restore unto me the joy of thy salvation; and uphold me with thy free spirit.

Psalms 51:10-12 (KJV)

1 And there shall come forth a rod out of the stem of Jesse, and a Branch shall grow out of his roots:
2 And the spirit of the Lord shall rest upon him, the spirit of wisdom and understanding, the spirit of counsel and might, the spirit of knowledge and of the fear of the Lord;

Isaiah 11:1-2 (KJV)

10 But they rebelled, and vexed his holy Spirit: therefore he was turned to be their enemy, and he fought against them.
11 Then he remembered the days of old, Moses, and his people, saying, Where is he that brought them up out of the sea with the shepherd of his flock? where is he that put his holy Spirit within him?

Isaiah 63:7-11 (KJV)

25 Then will I sprinkle clean water upon you, and ye shall be clean: from all your filthiness, and from all your idols, will I cleanse you.
26 A new heart also will I give you, and a new spirit will I put within you: and I will take away the stony heart out of your flesh, and I will give you an heart of flesh.
27 And I will put my spirit within you, and cause you to walk in my statutes, and ye shall keep my judgments, and do them.

Ezekiel 36:25-27 (KJV)

28 And it shall come to pass afterward, that I will pour out my spirit upon all flesh; and your sons and your daughters shall prophesy, your old men shall dream dreams, your young men shall see visions:
29 And also upon the servants and upon the handmaids in those days will I pour out my spirit.
30 And I will shew wonders in the heavens and in the earth, blood, and fire, and pillars of smoke.
31 The sun shall be turned into darkness, and the moon into blood, before the great and the terrible day of the Lord come.
32 And it shall come to pass, that whosoever shall call on the name of the Lord shall be delivered: for in mount Zion and in Jerusalem shall be deliverance, as the Lord hath said, and in the remnant whom the Lord shall call.

Joel 2:28-32 (KJV)

• Holy Spirit in Hebrew is: Ruach HaKodesh
• Sometimes also Spirit of God: Ruach Elohim
• Means spirit, breath and wind. The word Mashiach, or Messiah, means anointed. Anointed with G-d’s spirit!
• Clearly the idea of a Holy Spirit is a part of Judaism and relates to prophesying or speaking utterances glorifying G-d, and other abilities.
• Compare the above to the following New Testament scriptures

1 And when the day of Pentecost was fully come, they were all with one accord in one place.
2 And suddenly there came a sound from heaven as of a rushing mighty wind, and it filled all the house where they were sitting.
3 And there appeared unto them cloven tongues like as of fire, and it sat upon each of them.
4 And they were all filled with the Holy Ghost, and began to speak with other tongues, as the Spirit gave them utterance.
5 And there were dwelling at Jerusalem Jews, devout men, out of every nation under heaven.
6 Now when this was noised abroad, the multitude came together, and were confounded, because that every man heard them speak in his own language.

Acts 2:1-6 (KJV)

38 Then Peter said unto them, Repent, and be baptized every one of you in the name of Jesus Christ for the remission of sins, and ye shall receive the gift of the Holy Ghost.
39 For the promise is unto you, and to your children, and to all that are afar off, even as many as the Lord our God shall call.

Acts 2:38-39 (KJV)

21 Now he which stablisheth us with you in Christ, and hath anointed us, is God;
22 Who hath also sealed us, and given the earnest of the Spirit in our hearts.

2 Corinthians 1:21-22 (KJV)

6 And because ye are sons, God hath sent forth the Spirit of his Son into your hearts, crying, Abba, Father.
7 Wherefore thou art no more a servant, but a son; and if a son, then an heir of God through Christ.

Galatians 4:6-7 (KJV)

13 In whom ye also trusted, after that ye heard the word of truth, the gospel of your salvation: in whom also after that ye believed, ye were sealed with that holy Spirit of promise,
14 Which is the earnest of our inheritance until the redemption of the purchased possession, unto the praise of his glory.

Ephesians 1:13-14 (KJV)

20 Knowing this first, that no prophecy of the scripture is of any private interpretation.
21 For the prophecy came not in old time by the will of man: but holy men of God spake as they were moved by the Holy Ghost.

2 Peter 1:16-21 (KJV)

22 But the fruit of the Spirit is love, joy, peace, longsuffering, gentleness, goodness, faith,
23 Meekness, temperance: against such there is no law.
24 And they that are Christ's have crucified the flesh with the affections and lusts.
25 If we live in the Spirit, let us also walk in the Spirit.

Galatians 5:22-25 (KJV)

• There are even midrashim on the Holy Spirit and other external sources that are interesting and show that the Spirit annoints the Mashiach:

From the time of creation constant reference is made in Holy Writ to Messiah and the Messianic hope of Israel. 'The Spirit of God moved upon the face of the waters'; the Spirit of God means Messiah.

Midrash Gen. Rabba 2; also Lev. Rabba 14

AND THE SPIRIT OF G-D HOVERED: this alludes to the spirit of Messiah, as you read, And the spirit of the Lord shall rest upon him (Isa, XI, 2)

Midrash Genesis Rabbah 2:4

According to the remarkable statement of Tanna debe Eliyahu, ed. Friedmann, the Holy Spirit will be poured out equally upon Jews and pagans, both men and women, freemen and slaves.

Jewish Encyclopedia, Definition of Holy Spirit

• Interestingly there is a scientific study at the University of Pennsylvania that has shown that those who claim to speak in tongues show they are not using the part of their brain usually used during speech:

Language Center of the Brain Is Not Under the Control of Subjects Who "Speak in Tongues" - First Neuroimaging Examination of Participants Practicing Glossolalia Shows Decreased Cerebral Activity, Penn Study Shows

University of Pennsylvania - OCTOBER 30, 2006

https://www.pennmedicine.org/news/news-releases/2006/october/language-center-of-the-brain-i

"Our finding of decreased activity in the frontal lobes during the practice of speaking in tongues is fascinating because these subjects truly believe that the spirit of God is moving through them and controlling them to speak. Our brain imaging research shows us that these subjects are not in control of the usual language centers during this activity, which is consistent with their description of a lack of intentional control while speaking in tongues."