We have in this scripture the truth that, though there are certain things only known to God, there is enough revealed to us in His word to help us live for Him according to His will.
This knowledge alone comforts those who have placed their complete trust in God because they have come to the realization that trusting in the will of God is best!
The promise here is that when we put our faith fully in the ability and will of God, whether we fully understand all things or not, we have enough information available to us that we may keep His word and still please God!
Pastor Fulmer's Blog 