“The person’s steps are directed by Yahweh; how then can a person understand his road?” This verse is not saying God controls what we do. It is saying that in every person’s life there will be many points of decision, and God directs us to places or puts us in situations where we can be most effective for Him. The godly person recognizes the hand of God on his life and willingly decides to follow the paths the Lord opens before him. As we walk with God, we find ourselves in many situations that we could not or would not have planned for. In that sense, we cannot understand the “way,” the road, God lays out for us. It develops as we walk it.
[For a better understanding of this proverb and why it is worded the way it is, see commentaries on Prov. 16:1 and Prov. 16:9.]