Why do some people not receive Jesus?

Spiritual blindness is a significant reason some individuals fail to receive Jesus. As stated in John 1:10-11, 'He was in the world, and the world knew Him not. He came unto His own, and His own received Him not.' This indicates that the natural man's heart is hardened to the truths of Christ, often lacking the love necessary to embrace Him. Furthermore, 1 Corinthians 2:14 mentions that the natural man does not receive the things of the Spirit of God, which reveals their spiritual incapacity to recognize and accept Christ as Savior.