Abraham has faith in God, he has a relationship with God. Consider your own faith in God (none); consider your own relationship with God (hate Him).
Building on the Genesis story of Adam and Eve. God asked them not to eat of a certain tree. They disobeyed. God asks something much more difficult of Abraham. Abraham, through his relationship with God, trusted God and proceeded through obedience. He told his son that God would provide the sheep. In fact, afterwards, Abraham named the place God will provide.
In other words, it is obedience to God that results in freedom, putting God first which brings about the best results.