The Hebrew adjective amots means strong, robust, or firm — referring to physical or moral strength. It is related to the common verb amats meaning to be strong or to strengthen. It can describe the strength of a horse (Zechariah 6:3,7) or the bold courage called for in spiritual battle.
Strength in the Old Testament is always ultimately derived from God. The command to 'be strong and courageous' (hazaq we-amats — Deuteronomy 31:6) pairs two Hebrew roots for strength, showing that godly courage is not self-manufactured but grounded in God's presence. Amots strength is not arrogance but trust-fueled resolve.