en_tn/pro/20/06.md

is loyal

"is faithful" or "is trustworthy"

but who can find one who is faithful?

The implicit answer is "few can find someone like that." This rhetorical question can be written as a statement. AT: "but few men can find a person who is faithful!" or "but it is hard to find a person who really is faithful!" (See: rc://en/ta/man/translate/figs-rquestion)