Christs death ensures for all whom He died Spiritual Life to serve the Living God !
Heb 9:12-14
12 Neither by the blood of goats and calves, but by his own blood he entered in once into the holy place, having obtained eternal redemption for us.
13 For if the blood of bulls and of goats, and the ashes of an heifer sprinkling the unclean, sanctifieth to the purifying of the flesh:
14 How much more shall the blood of Christ, who through the eternal Spirit offered himself without spot to God, purge your conscience from dead works to serve the living God?
The writer of Hebrews here in showing the superiority of the sacrifice of Christ and His blood over that of sacrificial animal blood, which did produce some effects such as " sanctifieth to the purifying of the flesh:" HOW MUCH MORE will the sacrificial blood of Christ purge the conscience from dead works, for those He died and effects them unto serving the Living God. This service unto the Living God cant be done by a spiritually dead sinner, hence denoting Spiritual life shall be given.
The word serve in Heb 9:14 is the greek word latreuó and does mean to worship
Its the word Paul used here Phil 3:3
For we are the circumcision, which worship God in the spirit, and rejoice in Christ Jesus, and have no confidence in the flesh.
The circumcision here Paul means has nothing to do with physical circumcision, but circumcision of the heart by the Spirit Rom 2:28-29
28 For he is not a Jew, which is one outwardly; neither is that circumcision, which is outward in the flesh:
29 But he is a Jew, which is one inwardly; and circumcision is that of the heart, in the spirit, and not in the letter; whose praise is not of men, but of God.
The death of Christ shall effect the circumcision that is of the heart, in the Spirit so that those Christ died for shall serve/worship the Living God. This comes with the death of Christ. So anyone that never comes to serving the Living God through the Spirit, Christ couldn't have died for them, lest there was a defect in His death and its effects its promised to effect.
Those who teach that people Christ died for still wind up dead in sin, unregenerate in unbelief teach against Christ and His Blood.70