John 1:12 But as many as received Him, to them He gave the right to become children of God, even to those who believe in His name,
John 1:15 John testified about Him and cried out, saying, "This was He of whom I said, 'He who comes after me has a higher rank than I, for He existed before me.'"
John 1:19 This is the testimony of John, when the Jews sent to him priests and Levites from Jerusalem to ask him, "Who are you?"
John 3:26 And they came to John and said to him, "Rabbi, He who was with you beyond the Jordan, to whom you have testified, behold, He is baptizing and all are coming to Him."
John 5:33 "You have sent to John, and he has testified to the truth.
Acts 19:4 Paul said, "John baptized with the baptism of repentance, telling the people to believe in Him who was coming after him, that is, in Jesus."
Galatians 3:26 For you are all sons of God through faith in Christ Jesus.
Matthew Henry's Concise Commentary
1:6-14 John the Baptist came to bear witness concerning Jesus. Nothing more fully shows the darkness of men's minds, than that when the Light had appeared, there needed a witness to call attention to it. Christ was the true Light; that great Light which deserves to be called so. By his Spirit and grace he enlightens all that are enlightened to salvation; and those that are not enlightened by him, perish in darkness. Christ was in the world when he took our nature upon him, and dwelt among us. The Son of the Highest was here in this lower world. He was in the world, but not of it. He came to save a lost world, because it was a world of his own making. Yet the world knew him not. When he comes as a Judge, the world shall know him. Many say that they are Christ's own, yet do not receive him, because they will not part with their sins, nor have him to reign over them. All the children of God are born again. This new birth is through the word of God as the means, 1Pe 1:23, and by the Spirit of God as the Author. By his Divine presence Christ always was in the world. But now that the fulness of time was come, he was, after another manner, God manifested in the flesh. But observe the beams of his Divine glory, which darted through this veil of flesh. Men discover their weaknesses to those most familiar with them, but it was not so with Christ; those most intimate with him saw most of his glory. Although he was in the form of a servant, as to outward circumstances, yet, in respect of graces, his form was like the Son of God His Divine glory appeared in the holiness of his doctrine, and in his miracles. He was full of grace, fully acceptable to his Father, therefore qualified to plead for us; and full of truth, fully aware of the things he was to reveal.