Job 1:4-5

4Now his sons used to go and hold a feast in the house of each one in turn, and they would send and invite their three sisters to eat and to drink with them.

5When the days of their feasting were finished, Job would send for them and sanctify them; he would get up early in the morning and offer burnt offerings according to the number of them all. For Job thought, “Perhaps my children have sinned and cursed God in their hearts.” This was Job’s customary practice.