Since we are redeemed by grace alone, through faith alone, where does this faith come from?

Question 35
Q: Since we are redeemed by grace alone, through faith alone, where does this faith come from?
A: All the gifts we receive from Christ we receive through the Holy Spirit, including faith itself.
Question 36
Q: What do we believe about the Holy Spirit?
A: That he is God, coeternal with the Father and the Son, and that God grants him irrevocably to all who believe.
Question 37
Q: How does the Holy Spirit help us?
A: The Holy Spirit convicts us of our sin, comforts us, guides us, gives us spiritual gifts and the desire to obey God; and he enables us to pray and to understand God's Word.