Deuteronomy 28:40

Thou shalt have olive trees throughout thy coasts,.... In the several parts of the land of Canaan, which is therefore called a land of olive oil, Deuteronomy 8:8;

but thou shalt not anoint [thyself] with the oil; nor any other relations, friends, guests, as was usual at entertainments; see

Psalms 23:5; for the phrase "thyself" is not in the text. The reason why they should not anoint is, because they would have no oil to anoint with:

for thine olive shall cast [his fruit]; before it is ripe, by one means or another, as by winds, or blasting and mildew; see Amos 4:9.