“…before Baptism sin dwells in the heart and grace acts from outside, but after Baptism, grace settles in the heart and sin attracts us from outside. It is banished from the heart as an enemy from a fortress, and it settles outside, in the parts of the body, from where it acts by means of attacks in a fragmented state.”
(St Theophan the Recluse quoting St Diodochos)