'Customs' in the Bible

Even Judah did not keep the commands of Yahweh their God, and they walked in the customs of Israel which they introduced,

So they said to the king of Assyria, "The nations whom you deported and settled in the cities of Samaria do not know the customs of the God of the land, so he sent lions among them, and now they are killing them because they do not know the customs of the God of the land."

Then the king of Assyria commanded, saying, "Release one of the priests whom you deported from there, and let him go and settle there. Let him teach them the customs of the God of the land."

Yahweh they were fearing, but their gods they were serving, according to the customs of the nations from which they were deported.

Until this day they [are] doing according to their former customs; none of them [are] fearing Yahweh, and none of them [are] doing according to their statutes, to their decisions, to the law, or to the commands that Yahweh commanded the descendants of Jacob [to] which he had given the name Israel.

They did not listen but kept on doing according to their former customs.