The answer
In his book on “Grace and Free Will,”573 St. Augustine urges us to cling to divine grace, saying, “Thus, it is necessary for a man that he should be not only justified when unrighteous [i.e., before his repentance or baptism] by the grace of God,—that is, be changed from unholiness to righteousness,—when he is requited with good for his evil; but that, even after he has become justified by faith, grace should accompany him on his way, and he should lean upon it, lest he fall.”574
Fr. Tadros Yacoub Malaty
Notes
573 St. Augustine of Hippo, A Treatise on Grace and Free Will 12–13 (NPNF I/5:448–449).
574 St. Augustine of Hippo, A Treatise on Grace and Free Will 13 (NPNF I/5:449).