en_tn/1ti/05/19.md

receive

"listen to" or "accept"

two or three

"at least two" or "two or more"

Reprove

"Rebuke" or "Correct"

sinner

Here this means anything we do that does not obey or please God, even things that other people don't know about.

in the sight of all

"where everyone can see"

so that the rest may be afraid

"so that others will be afraid to sin"