John 1:36

and having looked on Jesus walking, he saith, 'Lo, the Lamb of God;'

John 1:29

on the morrow John seeth Jesus coming unto him, and saith, 'Lo, the Lamb of God, who is taking away the sin of the world;

Isaiah 45:22

Turn to Me, and be saved, all ends of the earth, For I am God, and there is none else.

Isaiah 65:1-2

I have been inquired of by those who asked not, I have been found by those who sought Me not, I have said, 'Behold Me, behold Me,' Unto a nation not calling in My name.

Hebrews 12:2

looking to the author and perfecter of faith -- Jesus, who, over-against the joy set before him -- did endure a cross, shame having despised, on the right hand also of the throne of God did sit down;

1 Peter 1:19-20

but with precious blood, as of a lamb unblemished and unspotted -- Christ's --

Treasury of Scripture Knowledge

Summary

And looking upon Jesus as he walked, he saith, Behold the Lamb of God!

General references

Bible References

Behold

John 1:29
on the morrow John seeth Jesus coming unto him, and saith, 'Lo, the Lamb of God, who is taking away the sin of the world;
Isaiah 45:22
Turn to Me, and be saved, all ends of the earth, For I am God, and there is none else.
Isaiah 65:1
I have been inquired of by those who asked not, I have been found by those who sought Me not, I have said, 'Behold Me, behold Me,' Unto a nation not calling in My name.
Hebrews 12:2
looking to the author and perfecter of faith -- Jesus, who, over-against the joy set before him -- did endure a cross, shame having despised, on the right hand also of the throne of God did sit down;
1 Peter 1:19
but with precious blood, as of a lamb unblemished and unspotted -- Christ's --

General references

Genesis 22:8
and Abraham saith, 'God doth provide for Himself the lamb for a burnt-offering, my son;' and they go on both of them together.