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, Ecclesiastes 1:13, and vexation of mind, shalt thou get thy food and livelihood: bread being put for all nourishment, as Genesis 18:5, Genesis 28:20. Dust thou art, as to the constitution and original of thy body. See Genesis 18:27 Job 1:21 Psalms 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, Ecclesiastes 12:7. Thus thy end shall be as base as thy beginning.
Related Commentaries of Genesis 3:19
Genesis 3:19
19 In the sweat of thy face shalt thou eat bread, till thou return unto the ground; for out of it wast thou taken: for dust thou art, and unto dust shalt thou return.