Charles Spurgeon Commentary Hebrews 10:13-18

"henceforth expecting till his enemies be made the footstool of his feet. For by one offering he hath perfected for ever them that are sanctified. And the Holy Spirit also beareth witness to us; for after he hath said, This is the covenant that I will make with them After those days, saith the Lord: I will put my laws on their heart, And upon their mind also will I write them; [then saith he,] And their sins and their iniquities will I remember no more. Now where remission of these is, there is no more offering for sin." — Hebrews 10:13-18 (ASV)

From henceforth expecting till his enemies be made his footstool. For by one offering he hath perfected for ever them that are sanctified. Whereof the Holy Ghost also is a witness to us: for after that he had said before, This is the covenant that I will make with them after those days, saith the Lord, I will put my laws into their hearts, and in their minds will I write them; And their sins and iniquities will I remember no more. Now where remission of these is, there is no more offering for sin.

Sin itself being no longer imputed to any believer in Christ, there is neither the occasion nor the need for the offering of another sacrifice for sin. Christ's one sacrifice has forever put away the sins of all who believe in him.