Deuteronomy 28:40

28:40 You will have olive trees throughout your territory but you will not anoint yourself with olive oil, because the olives will drop off the trees while still unripe.

Deuteronomy 32:2

32:2 My teaching will drop like the rain,

my sayings will drip like the dew,

as rain drops upon the grass,

and showers upon new growth.