Job 1:1-5 NIV
In the land of Uz there lived a man whose name was Job. This man was blameless and upright; he feared God and shunned evil. He had seven sons and three daughters, and he owned seven thousand sheep, three thousand camels, five hundred yoke of oxen and five hundred donkeys, and had a large number of servants. He was the greatest man among all the people of the East.
His sons used to hold feasts in their homes on their birthdays, and they would invite their three sisters to eat and drink with them. When a period of feasting had run its course, Job would make arrangements for them to be purified. Early in the morning he would sacrifice a burnt offering for each of them, thinking, “Perhaps my children have sinned and cursed God in their hearts.” This was Job’s regular custom.
NIV: New International Version