Charles Ellicott Commentary Psalms 16:8

"I have set Jehovah always before me: Because he is at my right hand, I shall not be moved." — Psalms 16:8 (ASV)

At my right hand. — Compare to Psalms 109:31; Psalms 110:5; Psalms 121:5. The image seems to be a military one: the shield of the right-hand comrade is a protection to the man beside him.