Matthew 3:14

But John would have hindered him, saying, I have need to be baptized of thee, and comest thou to me?

This testimony of John the Baptist to the sinless nature of Christ is doubly effective because he was a cousin of our Lord. From the intimacy of the family circle, the testimony of Jesus' perfect life was attested, no less than from his public deeds. John preached the "baptism of repentance for the remission of sins"; and since Christ had no sins of which to repent, and as John did not know of our Lord's other reason for being baptized, he would have prevented it.