One cant believe until they are saved by the power of regeneration and with a new heart. Prior to regeneration man is in the flesh and cannot please God Rom 8:8
You can't be saved till you believe. You have to hear and believe. In the Bible, regeneration refers to the spiritual rebirth or transformation of an individual, achieved through the work of the Holy Spirit, making them a new creation in Christ. This process is often described as being "born again" and is essential for salvation, as indicated in passages like John 3:3 and Titus 3:5.
John 5:24
Truly, truly, I say to you, whoever hears my word and believes him who sent me has eternal life. He does not come into judgment, but has passed from death to life.
Another word for
regeneration is
rebirth, related to the biblical phrase “born again.” Our rebirth is distinguished from our first birth, when we were conceived physically and inherited our sin nature. The
new birth is a spiritual, holy, and heavenly birth that results in our being made alive spiritually. Man in his natural state is “dead in trespasses and sins” until he is “made alive” (regenerated) by Christ.
This happens when he places his faith in Christ not before. We were dead once we believe in Jesus Christ then we are regenerated.
And you were dead in the trespasses and sins
Ephesians 2:1