en_tn/act/13/21.md

(Paul continues to speak.)

for the time of forty years

"to be their king for a period of forty (40) years"

he raised up David

"God chose David"

their king

"king of Israel" or "king over the Israelites"

It was about David that God said

"God said this about David"

I have found David the son of Jesse to be

"I have observed that David, the son of Jesse, is"

a man after my heart

This is an expression for "a man who desires what I desire" (UDB). (See: rc://en/ta/man/translate/figs-idiom)