How do we know that Jesus fulfilled the gospel of God?

The fulfillment of the gospel of God centers on the life, death, and resurrection of Jesus Christ. As the Apostle Paul articulates in Romans 1:3-4, Jesus was born of the seed of David, thereby confirming His humanity, and was declared the Son of God with power through His resurrection. His life demonstrates perfect obedience to God's law, His death pays the penalty for the sins of His people, and His resurrection validates His divine authority. The gospel assures that all God's justice was satisfied through Christ, securing salvation for those chosen in Him.