Ezekiel 6:13 in the World English Bible
You will know that I am the LORD when their slain men are among their idols around their altars, on every high hill, on all the tops of the mountains, under every green tree, and under every thick oak—the places where they offered pleasant aroma to all their idols.
Context
12 He that is far off shall die of the pestilence; and he that is near shall fall by the sword; and he that remaineth and is besieged shall die by the famine: thus will I accomplish my fury upon them.
13 Then shall ye know that I am the LORD, when their slain men shall be among their idols round about their altars, upon every high hill, in all the tops of the mountains, and under every green tree, and under every thick oak, the place where they did offer sweet savour to all their idols.
14 So will I stretch out my hand upon them, and make the land desolate, yea, more desolate than the wilderness toward Diblath, in all their habitations: and they shall know that I am the LORD.