Strong's #2391: chezeq (pronounced khay'-zek)
from 2388; help:--strength.
Brown-Driver-Briggs Hebrew Lexicon:
chêzeq
1) strength
Part of Speech: noun masculine
Relation: from H2388
Usage:
This word is used 1 times:
Psalms 18:1: "and from the hand of Saul: And he said, I will love thee, O LORD, my strength."