How does one become a believer according to the Bible?

The New Testament makes it clear that becoming a believer is an act of God's sovereign grace. In Acts 13:48, we find that 'as many as were ordained to eternal life believed.' This indicates that faith is not a mere human decision but is a result of God's divine purpose and calling. The transformation of the heart, where one is made willing to believe, is an essential aspect of the Reformed understanding of grace. Faith comes by hearing, as stated in Romans 10:17, and is a gift from God, affirming that salvation is entirely His work, leading believers to trust fully in Christ for their salvation.