In the day shall thou make thy plant to grow,.... Not that it is in the power of man to make it grow; but the sense is, that all means and methods should be used to make it grow, no cost nor pains should be spared:
and in the morning shall thou make thy seed to flourish; which may denote both diligence in the early care of it, and seeming promising success; and yet all should be in vain, and to no purpose:
[but] the harvest [shall be] a heap in the day of grief; or "of inheritance"; when it was about to be possessed and enjoyed, according to expectation, it shall be all thrown together in a heap, and be spoiled by the enemy: or, "the harvest" shall be "removed in the day of inheritance" w; just when the fruit is ripe, and going to be gathered in, the enemy shall come and take it all away; and so, instead of being a time of joy, as harvest usually is, it will be a time of grief and trouble,
and of desperate sorrow too, or "deadly"; which will leave them in despair, without hope of subsistence for the present year, or of having another harvest hereafter, the land coming into the hands of their enemies.
w נד קציר ביום נחלה "recedit messis in die hereditatis sive possessionis"; so some in Vatablus.