What does the Bible say about the sending of God's Son?

In Galatians 4:4-5, it is stated that 'when the fullness of the time was come, God sent forth His Son, made of a woman, made under the law, to redeem them that were under the law, that we might receive the adoption of sons.' This sending is a fundamental doctrine of the Christian faith, emphasizing that Jesus came not merely as a messenger, but as the incarnate Son of God with the divine authority to accomplish salvation. His coming was perfectly timed according to God’s sovereign plan, fulfilling prophecies and meeting the requirements of the law on behalf of sinful humanity.