'Powerful' in the Bible

How powerful have been upright sayings, And what doth reproof from you reprove?

He hath wrought iron with an axe, And hath wrought with coals, And with hammers doth form it, And doth work it by his powerful arm, Yea, he is hungry, and there is no power, He doth not drink water, and he is wearied.

Rise and go, for this is not the rest, Because of uncleanness it doth corrupt, And corruption is powerful.