3 "The voice of one proclaiming in the wilderness, Prepare a way for the Lord, make for him a straight passage:"
Mark 1:3 Cross References - Living_Oracles
Matthew 3:3
3 For this is he, of whom the Prophet Isaiah speaks in these words, "The voice of one proclaiming in the wilderness, Prepare a way for the Lord, make for him a straight passage."
4 As it is written in the book of the prophet Isaiah, "The voice of one proclaiming in the wilderness, Prepare a way for the Lord, make for him a straight passage.
5 Let every valley be filled, every mountain and hill be leveled; let the crooked roads be made straight, and the rough ways smooth,
6 that all flesh may see the salvation of God."
John 1:15
15 (It was concerning him John testified, when he cried, This is He of whom I said, He that comes after me, is preferred to me; for he was before me.)
John 1:19-34
19 Now this is the testimony of John. When the Jews sent priests and Levites from Jerusalem, to ask him, Who are you?
20 he acknowledged, and denied not, but acknowledged, saying, I am not the Messiah.
21 And they asked him, Who, then? Are you Elijah? He said, I am not. Are you the prophet? He answered, No.
22 They said, Tell, then, who you are, that we may return an answer to them who sent us. What do you say of yourself?
23 He answered, I am he whose voice proclaims in the wilderness, "Make straight the way of the Lord," as said, the Prophet Isaiah.
24 Now they who were sent, were of the Pharisees.
25 And they questioned him further, Why, then, do you immerse, if you be not the Messiah, nor Elijah, nor the prophet?
26 John answered, I immerse in water, but there is one among you whom you know not.
27 It is he who comes after me, and was before me; whose shoe-string I am not worthy to loose.
28 This happened at Bethabara, upon the Jordan, where John was immersing.
29 On the next day, John sees Jesus coming to him, and says, Behold the Lamb of God, that takes away the sin of the world.
30 This is He, concerning whom I said, After me a man comes, who is preferred to me; for he was before me.
31 As for me, I knew him not; but, that he might be made manifest to Israel, I am come immersing in water.
32 John testified further, saying, I saw the spirit descending from heaven, like a dove, and remaining upon him.
33 For my part, I should not have known him, had not He, who sent me to immerse in water, told me, Upon whom you shall see the Spirit descending, and remaining, the same is He who immerses in the Holy Spirit.
34 Having, therefore, seen this, I testify that he is the Son of God.
John 3:28-36
28 You yourselves are witness for me, that I said, I am not the Messiah; but am sent before him.
29 The bridegroom is he who has the bride; but the friend of the bridegroom, who assists him, rejoices to hear the bridegroom's voice: this, my joy, therefore, is complete.
30 He must increase, while I decrease.
31 He who comes from above, is above all. He who is from the earth is earthly, and speaks as being from the earth. He who comes from heaven, is above all.
32 What he testifies, is what he has seen and heard; yet his testimony is not received.
33 He who receives his testimony, vouches the veracity of God.
34 for he whom God has commissioned, relates God's own words; for to him God gives not the Spirit by measure.
35 The Father loves the Son, and has subjected all things to him.
36 He who believes on the Son, has life eternal; he who rejects the Son, shall not see life: but the vengeance of God awaits him.