Strong’s Greek
G17 — agathopoios
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
ἀγαθοποιός
agathopoios — pronounced ag-ath-op-oy-os'
from 18 and 4160; a well-doer, i.e. virtuous:--them that do well. see GREEK for 18 see GREEK for 4160
1 occurrence in the KJV.
1 Peter 2:14
Or unto governors, as unto them that are sent by him for the punishment of evildoers, and for the praise of them that do well.