Romans 1:5

Romans 1:5 through whom we have received grace and apostleship to bring about the obedience of faith for the sake of his name among all the nations,

Paul acknowledges in this verse that his apostleship, like all the other apostles, came directly from the call and grace of Jesus Christ, and none of those called responded by telling Jesus they would think and pray about it and get back to him. No, this grace was applied to Paul and the other Apostles with divine POWER and they obeyed and followed immediately. This power enables humans to willingly abandon their bondage to the flesh and follow Christ. For Paul this happened on the Road to Damascus. There have never been or will there ever be any other apostles but these, and anyone else that claims to be an apostle or prophet of God is a false apostle or prophet.

Next in this verse Paul tells the purpose for which he was called. This purpose was and is to bring about the obedience of faith to all nations. God called and made known His gospel to Paul. In His gospel, righteousness is required and the only way for human beings to obtain this righteousness is through obedience. However, the obedience needed is not one of works or law keeping, but is an obedience of faith in Jesus Christ. Through faith, the righteousness of Jesus Christ is credited to the person exercising this faith.

Lastly, Paul tells us why God has provided grace to planet earth. It is for the sake of His name. This is another way of saying it is for His glory! Praise God that He called Paul, in a very dramatic way on the Road to Damascus, to save sinners in a manner that does more than make salvation possible. It secures salvation for those God calls.