1 Peter 1:19 - Matthew Poole's English Annotations on the Holy Bible

Precious; because the blood not only of an innocent person, but of the Son of God, Acts 20:28. As of a lamb; i.e. who was a Lamb. A lamb; the Lamb of God, that taketh away the sin of the world, 1 Thessalonians 1:29: not only like a lamb, for his innocence and gentleness, Isaiah 53:7, but the Antitype of the lambs which under the law were offered in the daily sacrifices, and more especially of the paschal lamb; whatever was shadowed out in that, and those other sacrifices, having its accomplishment in Christ. Without blemish; without fault, without defect, in which nothing was wanting that was requisite to its perfection; or, in which nothing could be blamed. The Greek word seems to be derived from the Hebrew Mum, so often used for a blemish; see Leviticus 24:19,20. And without spot; without any other deformity. The lamb might have no defect, but yet might have some spot; and it was to be perfect, Exodus 12:5, which implied its having neither the one nor the other. Christ was such a Lamb, perfect in holiness, and free from all sin, 1 Thessalonians 8:29,46 Heb 7:26 1 Peter 2:22.