'Mighty men' in the Bible

After him repaired Nehemiah the son of Azbuk, the ruler of the half district of Beth-zur, unto the place opposite the sepulchers of David, and to the pool that was man made, and unto the house of the mighty men.

All the sons of Perez who lived in Jerusalem were four hundred and sixty-eight mighty men.

And their brethren, mighty men of valour, an hundred twenty and eight: and their overseer was Zabdiel, the son of one of the great men.