By Christ's Death we are accepted of God !
This is that Blessed Truth of Rom 5:10
10 For if, when we were enemies, we were reconciled to God by the death of his Son, much more, being reconciled, we shall be saved by his life.
This teaches us a very blessed and gracious Truth, which the proud religionists cannot receive, and that is, even when those Christ died for are being enemies, unbelievers, ungodly, God has accepted them into His Favor, sees them as Just, and Righteous, and reckons them as if they never had sinned.
The word reconciled in Rom 5:10 is the greek word katallassō and means:
I.to change, exchange, as coins for others of equivalent value
A.to reconcile (those who are at variance)
B.return to favour with, be reconciled to one
C.to receive one into favour
And these have been Justified, which are reconciled while enemies because God will not impute sin unto them 2 Cor 5:19
19 To wit, that God was in Christ, reconciling the world unto himself, not imputing their trespasses unto them; and hath committed unto us the word of reconciliation.
So those reconciled here in 2 Cor 5:19 are the same ones of Rom 5:10 and so the reconciled enemies in Rom 5:10 dont have sin charged to them, even when they are unbelieving enemies, nor is faith and repentance required, no they are totally accepted of God without them,
So to teach, even suggest that any for whom Christ died[He did not die for everyone] must first come to Him in repentance in order to be accepted of God, saved or Justified before God, made right with Him, they are false witnesses, and scripture here Rom 5:10 condemns them as such ! 11