4.

And who, thou askest, shall help me, save He who slumbereth not, nor sleepeth? Hear what followeth: "The Lord Himself is thy keeper" (ver. 5). It is not therefore man, that slumbereth and sleepeth, but the Lord, that keepeth thee. How doth He keep thee? "The Lord is thy defence upon the hand of thy right hand."...It seemeth to me to have a hidden sense: otherwise he would have simply said, without qualification, "The Lord will keep thee," without adding, "on thy right hand." For how? Doth God keep our right hand, and not our left? Did He not create the whole of us? Did not He who made our right hand, make our left hand also? Finally, if it pleased Him to speak of the right hand alone, why said He, "on the hand of thy right hand," and not at once "upon thy right hand"? Why should He say this, unless He were keeping somewhat here hidden for us to arrive at by knocking? For He would either say, "The Lord shall keep thee," and add no more; or if He would add the right hand, "The Lord shall keep thee upon thy right hand;" or at least, as He added "hand," He would say, "The Lord shall keep thee upon thy hand, even thy right hand," ¹ not "upon the hand of thy right hand."...