en_tn/act/16/05.md

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the churches were strengthened in the faith and increased in number daily

This can be stated in active form. Alternate translation: "the believers became stronger in their faith, and there were more and more people becoming believers every day" (See: rc://en/ta/man/translate/figs-activepassive)

the churches were strengthened in the faith

This speaks of helping someone to believe more confidently as if it were making them physically stronger. (See: rc://en/ta/man/translate/figs-metaphor)