John Calvin Commentary Numbers 6:27

"So shall they put my name upon the children of Israel; and I will bless them." — Numbers 6:27 (ASV)

And they shall put my name. Although Jerome has rightly translated this, “They shall call upon my name,” yet since the Hebrew phrase is emphatic, I have preferred retaining it. For God deposits His name with the priests, so that they may daily bring it forward as a pledge of His good will, and of the salvation which proceeds from it.

The promise, which is finally added, gives assurance that this was no empty or useless ceremony, when He declares that He will bless the people. And from this we gather that whatever the ministers of the Church do by God’s command is ratified by Him with a real and solid result; since He declares nothing by His ministers which He will not Himself fulfill and perform by the efficacy of His Spirit.

But we must observe that He does not so transfer the office of blessing to His priests as to resign this right to them; for after having entrusted this ministry to them, He claims the accomplishment of the thing for Himself alone.