Gregory of Nyssa, on Ps 90:4

“He will overshadow thee with his shoulders: and under his wings thou shalt trust.”

“When the great David heard and understood this, he [David] said to him "who dwells in the shelter of the most High; He will overshadow you with his shoulders," which is the same as being behind God (for the shoulder is on the back of the body). Concerning himself David says, "My soul clings close to you, your right hand supports me." You see how Psalms agree with the history. For as the one says that the right hand is a help to the person who has joined himself close behind God, so the other says that the hand touches the person who waits in the rock on the divine voice and prays that he might follow behind.”

Imported from an open dataset — not yet checked against the printed edition.