What profit hath a man of all his labour which he taketh under the sun?] Chap. 2. 22. and 3. 9.
What] He had pronounced all vanity, verse 2. Now he convinceth the readers by the testimony of their own consciences: Tell ye what profit is in them, if ye can.
profit] What fruit remains to you of your labours You may lose all before ye die; if not, ye must leave all to the generation following, verse 4 He doth not forbid us to labour, but to look for felicity from our labours.
which he taketh under the sun] Here below. Also he shews the benefit of the light, for most works are done in the day.