In his book, Trusting God, Jerry Bridges contrasts the differences between obeying and trusting God:
I sympathize with those who find it difficult to trust God in adversity. I have been there often enough myself to know something of the distress, the despair, and the darkness that fills our souls when we wonder if God truly cares about our plight. I have spent a good portion of my adult life encouraging people to pursue holiness; to obey God. Yet, I acknowledge it often seems more difficult to trust God than to obey Him. The moral will of God given to us in the Bible is rational and reasonable. The circumstances in which we must trust God often appear irrational and inexplicable. The law of God is readily recognized to be good for us, even when we don’t want to obey it. The circumstances of our lives frequently appear to be dreadful and grim or perhaps even calamitous and tragic. Obeying God is worked out within well-defined boundaries of God’s revealed will. Trusting God is worked out in an arena that has no boundaries. We do not know the extent, the duration, or the frequency of the painful, adverse circumstances in which we must frequently trust God. We are always coping with the unknown.