An analogy:

Your driving down the road to a beautiful holiday destination.

You get to a y-junction and start down the left road. There are stop lights a little distance down the road, where a man who is clearly a local says to you that the left road has been flooded out and the only way you can take is the right road.

You believe him, turn and take the right road, thereby getting to your destination safely.

Did you need to repent and throw out your spare tire or syphon off some fuel to be able to turn and take the right road, or do you simply believe and turn?

Acts 11:21 KJB
[21] And the hand of the Lord was with them: and a great number believed, and turned unto the Lord.