John Calvin on Isaiah 37:34

34. By the way that he came shall he return. We have formerly explained what it is to return by the same way, that is, to depar without having accomplished anything, as we commonly say, (Il s’en est retourne comme il est venu,) “he returned as he came,” when nothing has been accomplished, and the efforts are unsuccessful. To confirm this, he adds, that “thus hath the Lord spoken;” for as soon as he “who cannot lie” (Titus 1:2) hath spoken, we ought to embrace and kiss his word, as if the result were rendered certain by the removal of every obstruction.