Easton's Bible Dictionary: M. G. Easton, M.A., D.D.
Only olive oil seems to have been used among the Hebrews. It was used for many purposes: for anointing the body or the hair (Ex. 29:7; 2 Sam. 14:2; Ps. 23:5, 92:10, 104:15; Lk. 7:46); in some of the offerings (Ex. 29:40; Lev. 7:12; Num. 6:15, 15:4), but was excluded from the sin-offering (Lev. 5:11) and the jealousy-offering (Num. 5:15); for burning in lamps (Ex. 25:6, 27:20; Mt. 25:3); for medicinal purposes (Isa. 1:6; Lk. 10:34; Jas. 5:14); and for anointing the dead (Mt. 26:12; Lk. 23:56).
It was one of the most valuable products of the country (Dt. 32:13; Ezek. 16:13), and formed an article of extensive commerce with Tyre (27:17).
The use of it was a sign of gladness (Ps. 92:10; Isa. 61:3), and its omission a token of sorrow (2 Sam. 14:2; Mt. 6:17). It was very abundant in Galilee.