What does the Bible say about the general call and effectual call?

The Bible distinguishes between a general call and an effectual call. The general call is extended to all people, inviting them to repentance and faith, often conveyed through creation, conscience, and providential circumstances (e.g., Romans 1:19-20, Proverbs 1:20-24). However, many reject this call, which leads to spiritual blindness and judgment as described in Proverbs 1:26-29. On the other hand, the effectual call is God's irresistible invitation to His elect, ensuring that they will indeed respond and come to faith in Jesus Christ (Galatians 1:15-16). This call is invincible and results in a genuine revelation of Christ within the believer's heart, as seen in personal conversion accounts like that of the Apostle Paul (Acts 9).