Divine Command Theorists believe that there are objective moral standard that are the same for everyone and are independent of individual beliefs. These moral standards are true for everyone regardless of whether or not they believe them or know of them. These ultimate moral standards exist in commands given by God. God commands only things that are good, and he would never command a person to act immorally. God is all-powerful, all knowing, and all loving. God commands these things in order to do what is good for us as humans, and his commands are automatically morally right.
The opponents of the Divine Command Theory do not believe that God has that much control over the earth and what is morally just and unjust. They believe that morality is subjective, and that even if there is a God morality would still be subjective. What does it matter anyway what God commands or thinks since it is just another subjective opinion? One of the only reasons that people obey God's commands is that they fear that they will be punished in someway if they do not. They fear that they will go to hell if they do not obey, or that something bad will happen to them. This would mean that their motives are merely self-interested. But, a Divine Command Theory advocate would argue that God created us, and it is our