Ezekiel 6:7

6:7 The slain will fall among you and then you will know that I am the Lord.

Ezekiel 6:13

6:13 Then you will know that I am the Lord – when their dead lie among their idols around their altars, on every high hill and all the mountaintops, under every green tree and every leafy oak, the places where they have offered fragrant incense to all their idols.

sn The phrase you will know that I am the Lord concludes over sixty oracles in the book of Ezekiel and indicates the ultimate goal of God’s action. The phrase is often used in the book of Exodus as well (Exod 7:5; 14:4, 18). By Ezekiel’s day the people had forgotten that the Lord (Yahweh) was their covenant God and had turned to other gods. They had to be reminded that Yahweh alone deserved to be worshiped because only he possessed the power to meet their needs. Through judgment and eventually deliverance, Israel would be reminded that Yahweh alone held their destiny in his hands.

sn By referring to every high hill…all the mountaintops…under every green tree and every leafy oak Ezekiel may be expanding on the phraseology of Deut 12:2 (see 1 Kgs 14:23; 2 Kgs 16:4; 17:10; Jer 2:20; 3:6, 13; 2 Chr 28:4).