'Mighty men' in the Bible

And David heareth, and sendeth Joab, and all the host of the mighty men,

and the Levites are numbered from a son of thirty years and upward, and their number, by their polls, is of mighty men thirty and eight thousand.

and there are found of the sons of Eleazar more for heads of the mighty men than of the sons of Ithamar; and they distribute them: Of the sons of Eleazar, heads for a house of fathers, sixteen; and of the sons of Ithamar, for a house of their fathers, eight.

and all the heads, and the mighty men, and also all the sons of king David have given a hand under Solomon the king;