Great post lass,
So convoluted is the instruction of fear these days. My mother would tell me, when I was young, "I brought you into this world and I can take you out," and "Fear? I know you think you fear nothing but you had better learn to fear me!" Using phrases such as these for instruction today can land a body in prison for Child Abuse, crazy.
My mother and my dad were both lost people that lived like Hell and in spite of their lack of faith I learned great lessons relating to the proper respect of our God. I was scared of failing dad, not because he might beat me but because it would break his heart and in, just, that manner, I fear God.
God has already purchased me, a slave, and has adopted me to be one of His sons, I cannot be lost in that manner but it is possible that I can disappoint Him. The argument, using God's attribute, omnipresence, can be made if we want to remain in the simple realm but our God is not a simple god and we are a complex creation.
As much as some will cry foul, there is great depth to be plumbed and understood when examining our Omnipotent God and His complex creation, man. While it is true that our father, God, already knows if I will fail Him or not, I do not know if I will or not. If I love God in a like manner to the manner that I love dad, I will work, strive, not to disappoint Him. Here is another major aspect worthy of it's own discussion and I will leave it right there.
So much to learn as we will never exhaust the teachings set before us by His spoken word, but only to grasp and hold on to that which we have learned by His Holy Spirit and be an example to others.