I know this is something I have struggled with where I read something in the Word and I disregard it because it was too far out there or something I felt I could not do. Then there are other times where I truly struggle and wrestle and try to grasp it and comprehend it. The struggle and wrestling can take a long time as I process what is being said. However, if we can freely disregard certain passages, doesn't that go against what 2 Timothy 3:16 says in saying that "ALL scripture is inspired by God and is useful to teach us what is true and make us realize what is wrong in our lives. It corrects us when we are wrong and teaches us to do what is right." The other example coming to my mind is the story of Samuel correcting Saul in 1 Samuel 15 where he says that obedience is of way more importance than burnt offerings and sacrifices.
So in thinking about both of these (waiting and obedience), it comes down to control and submission to God.