How do we know God's grace ensures our faith?

In Scripture, it is asserted that faith is a gift given by God's grace, which indicates that it is not something we can produce by our own efforts. Ephesians 2:8-9 reminds us that by grace we are saved through faith, and this is not from ourselves but the gift of God. The sovereign grace of God ensures that those who are chosen will be endowed with faith to believe and to rest in Christ’s finished work. This faith is essential for our justification and acceptance before God, as no one can please God by their own works.