By exasperating their sons, fathers create an opportunity for the devil to gain an advantage. Depending on how long the wounds take to heal, that advantage may exist for a very long time.
Sanctification relies upon the mixture of the Word, the Spirit, and life itself in order to function. God has deemed that there is no substitute for experience, for even His Son was required to live as a human (Php 2:7-8; Heb 4:15).