ʼêlâh

And they gave unto Jacob all the foreign gods which were in their hand, and the rings which were in their ears; and Jacob hid them under the oak which was by Shechem.

The first tagged occurrence in Genesis.

And the angel of Jehovah came, and sat under the oak which was in Ophrah, that pertained unto Joash the Abiezrite: and his son Gideon was beating out wheat in the winepress, to hide it from the Midianites.

The first tagged occurrence in Judges.

And Absalom chanced to meet the servants of David. And Absalom was riding upon his 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 heaven and earth; and the mule that was under him went on.

The first tagged occurrence in 2 Samuel.

And he went after the man of God, and found him sitting under an oak; and he said unto him, Art thou the man of God that camest from Judah? And he said, I am.

The first tagged occurrence in 1 Kings.

all the valiant men arose, and took away the body of Saul, and the bodies of his sons, and brought them to Jabesh, and buried their bones under the oak in Jabesh, and fasted seven days.

The first tagged occurrence in 1 Chronicles.

For ye shall be as an oak whose leaf fadeth, and as a garden that hath no water.

The first tagged occurrence in Isaiah.

And ye shall know that I am Jehovah, when their slain men shall be among their idols round about their altars, upon every high hill, on all the tops of the mountains, and under every green tree, and under every thick oak, the places where they offered sweet savor to all their idols.

The first tagged occurrence in Ezekiel.

They sacrifice upon the tops of the mountains, and burn incense upon the hills, under oaks and poplars and terebinths, because the shadow thereof is good: therefore your daughters play the harlot, and your brides commit adultery.

The first tagged occurrence in Hosea.