How do we know that grace is necessary for faith?

The Bible explicitly teaches that faith is a gift from God, as Ephesians 2:8-9 states, 'For by grace are ye saved through faith; and that not of yourselves: it is the gift of God: Not of works, lest any man should boast.' This passage illustrates that human beings, in their natural state, cannot produce genuine faith due to their sinful nature. The grace of God acts to awaken and regenerate the heart, allowing individuals to trust in Jesus Christ as their Savior. The inability of a corrupt heart to exercise true faith underscores the necessity of God’s grace in salvation.