As we look at the word of God we will see that God does not desire the sacrifice of burnt offerings or the blood of bulls and goats.  What God has always desired is for us to obey His voice.  We will explore the passages in the Old Testament which discusses how God wants obedience.  Some of the passages we will look at are listed below:1 Samuel ch 10 and 15:  We will look at the life of Saul.  Even though he received the holy spirit and a changed heart from God, Saul didn't continue in obedience.  Saul still referred to the LORD as his God, still desired to service and worship God, thought he was being obedient; but then God told Saul what He thought.  In the end God rejects Saul, removes His Spirit and gives Saul and evil spirit.  We find out that to disobey the voice of God is no different than divination or idolatry.Psalm ch 40, 51, 101:  We will look to see that God desires us to do His will.  We need a new heart and spirit to be able to do this.  Isaiah ch 1:  God rejects the worship and prayer of Israel.  He refers to them as sons whom he has brought up, the problem is Israel didn't respond to the discipline of the LORD.  God wants to reason with them and make their sins white like wool and snow.  But they must consent and obey God.  He doesn't want their sacrifices of animals, but their obedience from the heart.Jeremiah ch 7:  Again we find out that God doesn't want their customary sacrifice but what He has always required including what he told them before the 10 commandments were even given.  To obey His voice and walk in all the way He commands them.Mathew 9:13, 12:7; Hosea:  Jesus tells the people they need to learn what this statement means "I desire compassion and not sacrifice."  We will explore the book of Hosea to understand more of what this passage means.