Why is faith considered a gift from God in Reformed theology?

In Reformed theology, faith is understood as a divine gift that is not generated by human will or effort. As Ephesians 2:8 illustrates, 'For by grace are ye saved through faith; and that not of yourselves: it is the gift of God.' This perspective underscores that faith is a function of God's grace, rather than a human achievement. Such a belief aligns with the biblical portrayal of divine election, where God chooses some to receive this gift, resulting in their genuine belief and transformation.