Of course they did. None of them were perfectly sinless until they reached Heaven. I know that St Francis battled with lust and St Padre Pio battled arrogance and pride. What makes them saints is that instead of being sinless they were allowing God to absolve them of their sin through the sacrament of Reconciliation. It’s rumored that both Blessed John Paul II and Blessed Mother Theresa went to Confession every day.
On Catholic Answers Live, Fr Paul Keller explained the other day that (if our soul=window and light=relationship to God) that the more light that comes through a window, the easier it is to see the smudgeness of the sins making us dirty. So the saints were able to their sins much easier than the rest of us due to their close relationship with God.
No doubt most did, though maybe mostly venial sins.
Even those in religious life, even the Popes, confess regularly. Although, as Bishop Sheen said, ‘Listening to a nun’s confession is like being stoned to death with popcorn.’
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