Paul taught Gentiles the same exact gospel message Christ taught to the Jews:
1. Christ: “I must preach the kingdom of God to the other cities also, because for this purpose I have been sent.” - Luk. 4:43
Paul: “And indeed, now I know that you all, among whom I have gone preaching the kingdom of God, will see my face no more." - Acts 20:25
2. Christ: "For I have given you an example, that you should do as I have done to you." - Jhn 13:15
Paul: "For Christ is the end of the law for righteousness(standard of law-keeping) to everyone who believes." - Rom. 10:4
3. Christ : “Therefore you shall be perfect, just as your Father in heaven is perfect.""“Let your light so shine before men, that they may see your good works and glorify your Father in heaven." - Matt. 5:48, 16
Paul: "Do all things without complaining and disputing, that you may become blameless and harmless, children of God without fault in the midst of a crooked and perverse generation, among whom you shine as lights in the world," - Phl. 2:14-15
4. Christ: “If you keep My commandments, you will abide in My love, just as I have kept My Father's commandments and abide in His love." - Jhn. 15:10
Paul: "As you therefore have received Christ Jesus the Lord, so walk in Him, rooted and built up in Him and established in the faith, as you have been taught, abounding in it with thanksgiving." - Col. 2:6-7