No thesaurus can give you those words, no rhyming dictionary. They must happen out of you.
“In the rainy season, sometimes to get to the first lesson we had to run really quick, because we had to cross the river to school and we'd have to go up and down the bank to find a place to cross because there is no bridge.”
“You need to get down among the people who are the dirtiest and dustiest, and the depravity, and you need to see Christ's light shining there.”