Matthew 3:3: (he - John the Baptist)
For this is he who was spoken of by the prophet Isaiah, saying:
“The voice of one crying in the wilderness:
'Prepare the way of the Lord;
Make His paths straight.'”

Isaiah 40:3:
The voice of one crying in the wilderness:
“Prepare the way of the Lord;
Make straight in the desert
A highway for our God”.

Luke 7:27 (he - John the Baptist):
This is he of whom it is written:
“Behold, I send My messenger before Your face,
Who will prepare Your way before You.”

Malachi 3:1:
“Behold, I send My messenger,
And he will prepare the way before Me...”

John 1:26-34:
26 John answered them, saying, “I baptize with water, but there stands One among you whom you do not know.
27 It is He who, coming after me, is preferred before me, whose sandal strap I am not worthy to loose.”

29 The next day John saw Jesus coming toward him, and said, “Behold! The Lamb of God who takes away the sin of the world!
30 This is He of whom I said, ‘After me comes a Man who is preferred before me, for He was before me.’
33 I did not know Him, but He who sent me to baptize with water said to me, ‘Upon whom you see the Spirit descending, and remaining on Him, this is He who baptizes with the Holy Spirit.’
34 And I have seen and testified that this is the Son of God.”

Ezekiel 36:26–27:
26 I will give you a new heart and put a new spirit within you; I will take the heart of stone out of your flesh and give you a heart of flesh.
27 I will put My Spirit within you and cause you to walk in My statutes, and you will keep My judgments and do them.

Joel 2:28-29:
28 “And it shall come to pass afterward
That I will pour out My Spirit on all flesh;
Your sons and your daughters shall prophesy,
Your old men shall dream dreams,
Your young men shall see visions.
29 And also on My menservants and on My maidservants
I will pour out My Spirit in those days.

Act 2:14-17:
14 But Peter, standing up with the eleven, raised his voice and said to them, “Men of Judea and all who dwell in Jerusalem, let this be known to you, and heed my words.
15 For these are not drunk, as you suppose, since it is only the third hour of the day.
16 But this is what was spoken by the prophet Joel:
17 ‘And it shall come to pass in the last days, says God,
That I will pour out of My Spirit on all flesh;
...