John 1:29: "The next day he saw Jesus coming toward him, and said, 'Behold, the Lamb of God, who takes away the sin of the world!'"
John 1:35-36: "35 The next day again John was standing with two of his disciples, 36 and he looked at Jesus as he walked by and said, 'Behold, the Lamb of God!'"
Isaiah 53:6-7: "6 All we like sheep have gone astray; we have turned - every one - to his own way; and the LORD has laid on him the iniquity of us all. 7 He was oppressed, and he was afflicted, yet he opened not his mouth; like a lamb that is led to the slaughter, and like a sheep that before its shearers is silent, so he opened not his mouth."
1 Peter 1:18-19: "18 knowing that you were ransomed from the futile ways inherited from your forefathers, not with perishable things such as silver or gold, 19 but with the precious blood of Christ, like that of a lamb without blemish or spot."
John 14:27: "'Peace I leave with you; my peace I give to you. Not as the world gives do I give to you. Let not your hearts be troubled, neither let them be afraid.'"
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The text is public domain:
Lamb of God, pure and holy,
Who on the cross didst suffer,
Ever patient and lowly,
Thyself to scorn didst offer.
All sins Thou borest for us,
Else had despair reigned o'er us:
Have mercy on us,
O Jesus! O Jesus!
Lamb of God, pure and holy,
Who on the cross didst suffer,
Ever patient and lowly,
Thyself to scorn didst offer.
All sins Thou borest for us,
Else had despair reigned o'er us:
Have mercy on us,
O Jesus! O Jesus!
Lamb of God, pure and holy,
Who on the cross didst suffer,
Ever patient and lowly,
Thyself to scorn didst offer.
All sins Thou borest for us,
Else had despair reigned o'er us:
Thy peace be with us,
O Jesus! O Jesus!
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The name "Lamb of God" comes from the two citations from John 1, although Jesus is also compared to a lamb in Isaiah 53 and 1 Peter 1.
"Ever patient and lowly, / Thyself to scorn didst offer" paraphrases Isaiah 53:7 (just without the specific imagery), and the redemption mentioned in John 1:29, Isaiah 53, and 1 Peter 1 appears in the hymn as "All sins Thou borest for us."
Jesus' peace in John 14 appears at the very end: "Thy peace be with us, / O Jesus!"