2 Samuel 18:9
And Absalom met the servants of David. And Absalom rode on a mule, and the mule went under the thick boughs of a great oak, and his head caught hold of the oak, and he was taken up between the heaven and the earth; and the mule that was under him went away.
Torrey's Topical Textbook—AKJV

Ezekiel 6:13
Then shall you know that I am the LORD, when their slain men shall be among their idols round about their altars, on 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 smell to all their idols.
Torrey's Topical Textbook—AKJV