Treasury of Scripture Knowledge
Just as he says in Hosea, "I will call a people that was not mine, my people, And her who was not beloved, my beloved,
But if it is by his mercy, it is not for anything they have done. Otherwise, his mercy would not be mercy at all.
1 Corinthians 7:25
About unmarried women I have no command of the Lord to give you, but I will give you my opinion as that of one on whom through the Lord's mercy you can depend.
1 Timothy 1:13
though I once used to abuse, persecute, and insult him. But he had mercy on me, because I had acted in ignorance and unbelief,
So let us come with courage to God's throne of grace to receive his forgiveness and find him responsive when we need his help.
So it depends not on human will or exertion, but on the mercy of God.