What is the scriptural evidence that faith comes from God? I've heard both of these claims, and they seem to have irreconcilable differences:


God does his part (the call/invitation), now you do yours (respond in faith)
God not only gave his son for you, but he will give you the faith to believe it.


I'm less interested here in the broader question of the doctrine of election; I'm focusing specifically on the second bullet point: is there scriptural evidence that faith is a gift or something that we receive from God?
My position is that faith comes from God. Justification, the act whereby God pardons our sins and gives us the righteousness of Christ, is by grace through faith. There are a number of passages that illustrate this doctrine (ESV):

Jonah 2:9:


  But I with the voice of thanksgiving
      will sacrifice to you;
    what I have vowed I will pay.
      Salvation belongs to the Lord!


Ephesians 2:8-9:


  For by grace you have been saved through faith. And this is not your own doing; it is the gift of God, not a result of works, so that no one may boast.


1 John 4:19:


  We love because he first loved us.


Now this faith give to us by God is a living and active faith. It is no dead faith, but produces good works (obedience to the law). As James tells us, if the faith we have does not produce works, it is a dead faith.