en_tn_condensed/job/04/19.md

those who live in houses of clay, whose foundation is in the dust

This is a way of describing human beings, who were created out of the dust of the earth and whose bodies are like houses, which are made of clay and have dirt foundations.

who are crushed sooner than a moth

"who God destroys as easily as he crushes a moth" or "whose lives are as short as the life of a moth."