In the sweat of thy face, i.e. of thy body: he mentions the face, because there the sweat appears first and most. Or, with labour of body or brain, Ecc_1:13, and vexation of mind,
shalt thou get thy food and livelihood:
bread being put for all nourishment, as Gen_18:5, Gen_28:20.
Dust thou art, as to the constitution and original of thy body. See Gen_18:27Job_1:21Psa_103:14. Though upon thy obedience I would have preserved thy body no less than thy soul from all mortality; yet now, having sinned, thou shalt return unto dust in thy body, whilst the immortal spirit shall return unto God who gave it, Ecc_12:7. Thus thy end shall be as base as thy beginning.