His call was the call to bring new people into the fold of Jesus Christ. Because of this call he said that he was to go where Christ was not known. He said he was not called to be building on someone else's foundation. Because of this, Paul was always on the move. God had given him a plan.
Effective ministry is planned ministry.
Now by that I do not mean that we are to sit down and devise our own plan independent of the counsel and guidance of God. Rather, we are to seek God's will. We are to counsel with godly men and, through prayer, we are to discover God's guidance for our lives. If we are to be effective in our ministry for Jesus Christ, we must plan to be effective. In the next section of Scripture, Paul talks about his mission to the Jews.