If you don't want to face God because you know you have offended him, you have the right kind of fear. But if you are afraid that God will lord it over you should you accept him as your Lord, you've got it all wrong, for this fear is baseless and unjustifiable. We address God as Lord out of reverence and awe. If God had wanted to domineer over us, why did he give each of us the free will in the first place? All God desires is to love and serve us. It'd be extremely foolish and unfair to conceive God otherwise.