'Mighty One' in the Bible

After him hath Nehemiah son of Azbuk, head of the half of the district of Beth-Zur, strengthened, unto over-against the graves of David, and unto the pool that is made, and unto the house of the mighty ones.

Holding upon their brethren, their mighty ones, and coming into a curse, and into an oath, to go in the law of God which was given by the hand of Moses the servant of God, and to watch and to do all the command of Jehovah our Lord, and his judgments and his ordinances;