It means that God no longer views us as his enemies. The passive form of the verb used in Romans 5:10 (katèllagèmen: we were reconciled
) indicates that the reconciling act was God’s and not ours. Therefore, it is not the case that we have somehow been able to reconcile ourselves to God by abandoning our enmity. Nor does the clause mean that God simply took away our aversion towards him. Rather, what is emphasised here is that God stilled his own wrath over us, so that from his side he now adopts an attitude of peace towards us. It is important to note that it is we who are reconciled to him, and that we receive this reconciliation through (faith in) Jesus (Romans 5:11).1
10 For if while we were enemies we were reconciled to God by the death of his Son, much more, now that we are reconciled, shall we be saved by his life.