en_tn/luk/12/54.md

A shower is coming

"Rain is coming" or "It is going to rain" (UDB)

the earth and the heavens

"the earth and the sky" or "the weather"

how is it that you do not know how to interpret the present time?

This rhetorical question is used as a rebuke. It can be translated as "You should know how to interpret the present time." (See: rc://en/ta/man/translate/figs-rquestion)