John Gill Commentary Ezekiel 37:13

"And ye shall know that I am Jehovah, when I have opened your graves, and caused you to come up out of your graves, O my people." — Ezekiel 37:13 (ASV)

And you shall know that I am the Lord (See Gill on Ezekiel 37:6): when I have opened your graves, O my people, and brought you up out of your graves ; which is doing that for them which none but the omnipotent God could do; and they seeing his hand and power, his grace and mercy in it, will know, own, and acknowledge him.