THE SPIRITS of the giants destroyed by the Flood were venerated by the Amorites who dominated the culture around ancient Israel. The Hebrew prophets and psalmists condemned the cult of the dead, but you have to know what you’re looking for to find those scriptures.
We find one of them in Proverbs 21:
The man that wandereth out of the way of wisdom shall abide in the congregation of the dead. (KJV) One who wanders from the way of good sense will rest in the assembly of the dead. (ESV)
The word translated “dead” is Rephaim. These were not spirits of the human dead, but those of the monstrous Nephilim who died in the Flood. Further, it was believed by the pagan Amorites (and later by the Greeks and Romans) that the spirits of those hybrids—demigods like Perseus and Heracles—would intercede for the living as long as you offered them sacrifices and worship.
This is confirmed by religious texts from the Amorite kingdom of Ugarit, where the last king of that city-state, Ammurapi III (a name that means “my fathers are Rephaim”), was inaugurated with a necromantic ritual that summoned the Rephaim, calling some of them by name, and the “council of Ditanu”—a name from which the Greeks got the name of their old gods, the Titans.
In short, the Ditanu/Titans and the Rephaim/demigod heroes of the Amorites and Greeks were the sons of God and the Nephilim from Genesis 6:1–4, and Proverbs 21:6 is a warning that wanting to join the assembly of the Rephaim after death, like the Amorites, is stupid.
That echoes the additional calls for wisdom in Proverbs 21, which we’ve seen throughout the Proverbs to this point. This week, however, Proverbs 21:30 reminds us that despite the critical importance of wisdom, no human understanding can prevail against the Lord.