G0286–ἀμνός–amnos

The next day, he saw Jesus coming to him, and said, "Behold, the Lamb of God, who takes away the sin of the world!

ἀμνὸς amnos “Lamb”

and he looked at Jesus as he walked, and said, "Behold, the Lamb of God!"

ἀμνὸς amnos “Lamb”

Now the passage of the Scripture which he was reading was this, "He was led as a sheep to the slaughter. As a lamb before his shearer is silent, So he doesn't open his mouth.

ἀμνὸς amnos “a lamb”

but with precious blood, as of a lamb without spot, the blood of Christ;

ἀμνοῦ amnou “of a lamb”