Leviticus 22:23

Either a bullock or a lamb that hath any thing superfluous or lacking in his parts, that mayest thou offer [for] a freewill offering; but for a vow it shall not be accepted.

Ver. 23. That mayest thou offer.] Though it have some kind of defect, yet, in free will offerings, it might pass. This was to signify that our imperfect obedience after that we are once in Christ, is accepted by Christ, who is without all blame and blemish.