Totally obey and follow God's words

Acts 9:10-19a
The Lord called a disciple named Ananias to him in a vision.
Go to the house of Judas on Straight Street and ask for a man from Tausus named Saul, for he is praying.
The Lord said to Ananias, "Go! this man is my chosen instrument to carry my name before the Gentiles and their kings and before the people of Israel. I will show him how much he must suffer for my name."
Ananias placing his hands on Saul, said  "The Lord - Jesus who sent me so that you may see again and be filled with the Holy Spirit..."
By the time Ananias to do but think. Saul the persecutor has become 'Brother Saul' - a man who will suffer much for the cause he tried to stamp out. His immense energy is given at once to preaching Jesus as Son of God; and opposition begins.
Tarsus: A university city with a population of half a million; meeting-place of East and west, Greek and Oriental.
Why?
God chosen any kind of men as instrument for his mission to preaching gospel and be good witnesses.
Go is the action, obey God's command and go out, God is with us.
Ananias knew Saul had persecuted saints in Jerusalem but he call Brother Saul, he is fully obey God's way and instruction, for he is fear the Lord and had faith to the Lord. From world's perspective go to meet Saul is dangerous action.
I would subdue to the Lord rather to others, for God is good.
What will make me not obey God's word? My fresh desires.
How?
Follow and obey God's word is the best choice! Make right choice is better than any others.