Not many people know that the bible teaches repentance and faith are gifts from God. Most people think their faith is acceptable to God, but how can sinful, corrupt faith be acceptable to a God who demands perfection (Matt. 5:48 )? Here is a list of verses that show that repentance and faith are gifts,

Ephesians 2:8-9For by grace you have been saved through faith, and that not of yourselves; it is the gift of God, (9) not of works, lest anyone should boast.

Acts 13:48 And when the Gentiles heard this, they were glad, and glorified the word of the Lord: and as many as were ordained to eternal life believed.

Acts 16:14 And a certain woman named Lydia, a seller of purple, of the city of Thyatira, which worshipped God, heard [us]: whose heart the Lord opened, that she attended unto the things which were spoken of Paul.

Acts 18:27 And when he was disposed to pass into Achaia, the brethren wrote, exhorting the disciples to receive him: who, when he was come, helped them much which had believed through grace:

Php 1:29 For unto you it is given in the behalf of Christ, not only to believe on him, but also to suffer for his sake;

2 Timothy 2:25-26in humility correcting those who are in opposition, if God perhaps will grant them repentance, so that they may know the truth, (26) and that they may come to their senses and escape the snare of the devil, having been taken captive by him to do his will.

Acts 5:31 Him hath God exalted with his right hand [to be] a Prince and a Saviour, for to give repentance to Israel, and forgiveness of sins.

Acts 11:18 When they heard these things, they held their peace, and glorified God, saying, Then hath God also to the Gentiles granted repentance unto life.

Galatians 1:15-16But when it pleased God, who separated me from my mother's womb and called me through His grace, (16) to reveal His Son in me, that I might preach Him among the Gentiles, I did not immediately confer with flesh and blood,

2Pet 1:3 According as his divine power hath given unto us all things that [pertain] unto life and godliness, through the knowledge of him that hath called us to glory and virtue:

1Cor 4:7 For who maketh thee to differ [from another]? and what hast thou that thou didst not receive? now if thou didst receive [it], why dost thou glory, as if thou hadst not received [it]?

1John 5:20 And we know that the Son of God is come, and hath given us an understanding, that we may know him that is true, and we are in him that is true, [even] in his Son Jesus Christ. This is the true God, and eternal life.

Consider the ramifications of this on your theology.