New Revised Standard Version
and as he watched Jesus walk by, he exclaimed, “Look, here is the Lamb of God!”

Contemporary English Version
When he saw Jesus walking by, he said, "Here is the Lamb of God!"

New American Bible
and as he watched Jesus walk by, he said, “Behold, the Lamb of God.”

Douay-Rheims Bible
And beholding Jesus walking, he saith: Behold the Lamb of God.

And beholding Jesus walking, he saith: Behold the Lamb of God.

Behold.

John 1:29 The next day, John saw Jesus coming to him; and he saith: Behold the Lamb of God. Behold him who taketh away the sin of the world.

Isaiah 45:22 Be converted to me, and you shall be saved, all ye ends of the earth: for I am God, and there is no other.

Isaiah 65:1,2 They have sought me that before asked not for me, they have found me that sought me not. I said: Behold me, behold me, to a nation that did not call upon my name. . . .

Hebrews 12:2 Looking on Jesus, the author and finisher of faith, who, having joy set before him, endured the cross, despising the shame, and now sitteth on the right hand of the throne of God.

1 Peter 1:19,20 But with the precious blood of Christ, as of a lamb unspotted and undefiled . . .