forewarned is forearmed
Definition:  knowing of the possible danger or problems that lie ahead, gives one a chance to have tactics to defend oneself
Usage:  after the teacher announced the test, he further went on to say forewarned is forearmed, so that the students can better prepare themselves

SEPEDI
Translation:  go sebošwa ke go itlhama
Proverb: mo ya mahlong a tau o ya a swere serumula

XITSONGA
Translation:  loko u lemukisiwa ta ha suka hansi, wa tilulamisela swi nga si humelela
Proverb: emahlweni ka nghala ku fambiwa na xisana

TSHIVENḒA
Translation:  o ṋewaho ngafhadzo ndi ane a dzula o ḓiṱama
Proverb: ngoma madzula wo vhambwa, musi wa mmbi a u ḓihwi