en_tn_lite_do_not_use/phm/01/16.md

better than a slave

"more valuable than a slave"

a beloved brother

"a dear brother" or "a precious brother in Christ"

much more so to you

"he means even more to you"

in both the flesh

"both as a man." Paul is referring to Onesimus' being a trustworthy servant. (See: rc://en/ta/man/jit/figs-metaphor)

in the Lord

"as a brother in the Lord" or "because he belongs to the Lord"