Strong’s Greek
G5541 — chresteuomai
The entry below is Strong’s own definition (1890, public domain), and every verse where the word occurs.
χρηστεύομαι
chresteuomai — pronounced khraste-yoo'-om-ahee
middle voice from 5543; to show oneself useful, i.e. act benevolently:--be kind. see GREEK for 5543
1 occurrence in the KJV.
1 Corinthians 13:4
Charity suffereth long, and is kind; charity envieth not; charity vaunteth not itself, is not puffed up,