Matthew Henry
Here is,
Thou shalt not sacrifice that which has any blemish, which renders it unsightly, or
any evil matter or thing(as the following word night better be rendered), any sickness or weakness, though not discernible at first view; it is an abomination to God. God is the best of beings, and therefore whatsoever he is served with ought to be the best in its kind. And the Old-Testament sacrifices in a special manner must be so, because they were types of Christ, who is a
Lamb without blemish or spot(1Pet 1:19), perfectly pure from all sin and all appearance of it. In the latter times of the Jewish church, when by the captivity in Babylon they were cured of idolatry, yet they were charged with profaneness in the breach of this law, with
offering the blind, and the lame, and the sick for sacrifice, Mal 1:8.
blind thus mislead the blind, both must fall into the ditch. Thus God would possess them with a dread of that sin, which they must conclude exceedingly sinful when so many sanguinary laws were made against it, and would deter those from it that would not otherwise be persuaded against it; and yet the law, which works death, proved ineffectual. See here,
wickedness in the sight of God, Deut 17:2. Be it ever so industriously concealed, he sees it, and, be it ever so ingeniously palliated, he hates it: it is a sin in itself exceedingly heinous, and the highest affront that can be offered to Almighty God.
put the evil away from among them, as before, Deut 13:9.