פירוש על איוב 1:5

Now it would come about when the cycle of the feasting days would be over When the days of the feasting would be over, Job would act in this manner; upon every termination of the seven days on which the days of feasting rotated, he would send and summon them (ויקדשם) ; i.e., he would prepare them and summon them, as in (Num. 11:18). “Prepare yourselves for tommorow.”

Having eliminated or dismissed all the normal explanations that might possibly be offered for Job's afflictions, the Prologue now goes on to relate the real reason why these great afflictions befell him.

and offer up... early in the morning The meaning is that he would offer up burnt-offerings early. Therefore, Scripture wrote in the future tense, that he was wont to do so always at the end of every seven days.