8 But God commendeth his love toward us, in that, while we were yet sinners, Christ died for us.
9 Much more then, being now justified by his blood, we shall be saved from wrath through him.
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.
-“God so loved the world, that he gave his only Son, that whoever believes in him should not perish but have eternal life” (John 3:16); God did that for us while we were full of sin and were completely unlovable. If He went so far for us then, how much more will he keep those that bear the image and righteousness of His own Son? As Paul testifies here, this is the strength of eternal security and that is how we know that salvation cannot be lost; if God was willing to justify His enemies out of love, how much more will He justify those He has called friends (John 15:15) and children (1 John 3:1)?