I will strengthen them in the Lord - As our Lord said to Paul, “My strength is made perfect in weakness,” and Paul said in turn, “When I am weak, then am I strong. And in His Name shall they walk up and down,” have their whole conversation (Dionysius), “in Him according to His will, and diligent in all things to speak and act in ills grace and divine hope.” Jerome: “Christians walk in the Name of Christ, and there is written on the new white stone given to them a “new name” Revelation 2:17, and under the dignity of a name so great, they walk with God, as “Enoch walked and pleased God and was translated” Genesis 5:24.
Saith the Lord - Dionysius: “Again the Lord God speaks of the Lord God, as of Another, hinting the plurality of Persons in the Godhead.”