en_tn/1ti/05/07.md

Instruct them in these things

"Teach them these things, too" or "Command them to do these things, too"

so that they may be blameless

"so that no one can find fault with them." Possible meanings of "they" are 1) "these widows and their families" or 2) "the believers." It might be best to leave the subject as "they."