... there is clearly expressed for us? what it is we must attribute either to free will or to the decision and daily assistance of the Lord. We are characterized by whether we respond zealously or lackadaisically to the kindly dispensations of God. This perspective is plainly expressed in the healing of the two blind men. Jesus was passing by, a fact made possible by God's provident grace. And the achievement of their own faith and belief was to cry out 'Lord, son of David, have mercy on us' (Mt. 20:31). The restored sight of their eyes is the gift of divine mercy.
John CassianMore John Cassian quotes
The apostles were very sure that everything of theirs which had to do with salvation was a gift to them from God. 'Increase our faith'. They did not presume that the fullness of faith would come to them merely because they freely opted for it. They believed, rather, that it was a gift of God which would have to be granted to them.
John Cassian
... a Christian is quite certain to fall into the same sins which he condemns in another with merciless and inhuman severity, for 'a stern king will fall into misfortunes,' and 'one who stops his ears so as not to hear the weak, shall himself cry, and there shall be none to hear him' (Prov. 13:17; 21:13).
John Cassian