1 Samuel 17:7

A weaver's beam, on which the weavers fasten their web. It was like this for thickness; and for length, that he omits, as easy to be collected by proportion to the rest. And though the whole weight of Goliath's armour may seem prodigious, yet it is not so much by far as one Athanatus did manage; of whom Pliny relates, that he saw him come into the theatre with arms weighing 12,000 ounces.