In the OT the adjective ʾaddîr is used in describing Yahweh (Exod. 15.11; 1 Sam. 4.8; Pss. 18.2, Pss. 10; Pss. 76.5) and also of persons or things of more than normal stature or strength, like the sea (Ps. 93.4), the mighty cedars of the Libanon (Ezek. 17.23), mighty people (Ezek. 32.18), or kings (Ps. 136.18). In Ps. 16.3 it seems to denote pagan deities (Tournay 1988:335).
In the ancient Ugaritic legend of Aqhat the ʾadrm are mentioned together with the king fulfilling his usual duties (KTU2 1.1…