Our desires are united with Gods desires

God has revealed Himself through divine revelation. When God created man , God gave him a vocabulary. When God created man and all things He spoke them into existence. Not only did God design the colors and shapes of all things but He made things work together perfectly though the same creative word. So God has a perfect description of everything that exist and how it functions. Gods description of all things is both revealed and mysterious. God has planned all of time in His eternal counsel and He has viewed the earth through out all generations. So God has a vocabulary that is beyond our understanding.
God has not described all the reasons for how things were created and work together but He has given us a limited language in His spoken word that is like an outline of the main points and a brief description of how everything works together. He has given us this language so that we might learn His purposes and be able to reason with Him. He has given this language in covenants , laws, decrees, curses and statutes. When we become experienced in using this language in our prayers we become united with God and all His purposes .This revealed language moves God to act with His mysterious creative hand on our behalf to unite us to His purposes. When we experience this mystery we are receiving eternal life as if God breathed new life in us. We are converted.
God wants us to be bold so He has given us this language in the form of arguments, complaints and pleadings. This revealed language is describing who God is and what He desires. God has created us like Himself. This language is a gift to us because it is communicated in such a way that it addresses all of our needs. When we use this language as it is designed we are communicating our natural longings to Him. This is what the Psalmist means when he proclaims that God gives us the desires of our hearts.
As we become experienced in pouring our hearts out to God, all of our natural longings begin to grow. We all are taught the same approach to God in this revealed language, but He answers each persons prayers according to their individual needs. Gods mysterious language addresses every created thing in its original identity according to their individual needs so that all things are united to work according to His purposes. When we become experienced in praying according to Gods revealed language we experience mystery and the pleasure of God uniting all things according to His purposes.