Jesus, God's Son, is the only person who never sinned. As a sinless person he was able to be the perfect sacrifice, to pay on the cross the death penalty for sin that satisfied the demands of God's justice. Jesus opened the way for people to be reunited with God. The Father draws people to believe in Jesus through the work of the Holy Spirit in their lives. People are transformed by the Spirit.
Regeneration precedes faith.
It enables people to believe. Since people are spiritually dead, the Holy Spirit does for them what they are unable to do for themselves. The Spirit brings them to life spiritually. Believers are held securely in God's grip. Their salvation is secure for all eternity.