Strong's G5541 — χρηστεύομαι (verb)
chresteuomai (khrayst-yoo'-om-ai) v.
1. to show oneself useful, i.e. act benevolently
[middle voice from G5543]
KJV: be kind 
Root(s): G5543 
Hebrew root: χρηστός
Occurrences: 1