Wherefore in all things it behoved him to be made like unto his brethren, that he might be a merciful and faithful high priest in things pertaining to God, to make reconciliation (atonement) for the sins of the people–Heb. 2:17.
Those who are blessed to hear and believe the gospel of the Lord Jesus Christ do not embrace or prescribe to a theory of atonement. In the Lord Jesus Christ and Him crucified we have a glorious atonement for all our sins by His precious blood (1John 4:10). We don't have an "attemptment" we have an effectual and full atonement.
Here are four things we know about His redeeming sacrifice and High Priestly work.
1). It is particular. The Lord Jesus laid down His life for His covenant people, all those chosen and given to Him in eternity (Matt. 1:21; John 6:37; 10:17; Eph. 1:3-6).
2). It is powerful. His blood sacrifice puts away all sins of His elect to the complete satisfaction of the holy Law and infinite justice of God. The Lord says of our sins that they are remembered no more (Psalm 103: 10-12; Heb. 10:17).
3). It is perpetual. His blood cleanses from all sins continuously (1John 1:7). Sins past, sins present and sins future through His constant intercession (Rom. 8:34; Heb. 7:25), powerful advocacy (1John 2:1) and prevailing meditation for His people (1Tim. 2:5).
4). It is permanent. His blood atonement is not a temporary solution and stop-gap measure. The Lord Jesus obtained for His people eternal redemption (Heb. 9:12). He purchased for His people eternal salvation and eternal life (Isa. 45:17; John 10:27-30). Listen to the words of this sweet promise, "I know that, whatsoever God doeth, it shall be for ever: nothing can be put to it, nor any thing taken from it: and God doeth it, that men should fear before him" (Eccl. 3:14).
Thanks be unto our great and glorious Lord for His particular, powerful, perpetual and permanent atonement (1Cor. 15:57)!