I Peter 5:8 "... your adversary the devil, as a roaring lion, walketh about, seeking whom he may devour:"
I listened to a sermon tape of Elder J. F. Poole, which brought to mind this thought. He believed that we may often credit things to Satan when in fact the blame could be put on the flesh, and went on to point out that Satan (or the devil) is not omnipresent (that is, always present everywhere). Satan, unlike God, is a finite being and cannot be everywhere present at once. Now he is also a spiritual being, so he is not limited in mode of travel as those of us in the physical realm and probably can move about pretty fast. But when he is here, he is not over there and vice versa. I think most of us understand that Satan is not omnipresent, but we may be guilty of speaking in such a way that tends to attribute such a characteristic to him. Let us be cautious in our speech and not give credit to Satan that which only belongs to God.