As we follow God, we often call upon Him and think that we can determine what He needs to do if we just pray and ask Him. Then, like an overconfident child, we expect God to follow through the way we want Him to provide. We tell him how to accomplish what He wants to accomplish. 

In Psalm 51, David acted as an accurately-confident child. He knew God would provide for him what he asked. When David was asking for God to move and do things, He was already aware of what God is able and willing to do. He was making requests of a loving provider, not telling God how to move or behave.