His God instructs him and teaches him the right way.
What others may speak or preach to me that I may not grasp, God can say in a whisper and I get! That is, if I am open and receptive to His voice.
Pray for the prodigal to have a teachable spirit. May they listen for the voice of God to instruct and lead them. His direction will never lead them astray.
____________’s God instructs him/her and teaches him/her the right way.