Ex 23:13 And in all [things] that I have said unto you be circumspect: and make no mention of the name of other gods, neither let it be heard out of thy mouth.
1. One motive for this was the extinction of idols.
And ye shall overthrow their altars, and break their pillars…and destroy the names of them out of that place.
2. Yahweh through His prophets told us a day would come when the false gods would be remembered no more. As the Church spread, the gods disappeared
Thus shall ye say unto them, The gods that have not made the heavens and the earth, [even] they shall perish from the earth, and from under these heavens.
For I will take away the names of Baalim out of her mouth, and they shall no more be remembered by their name.
And it shall come to pass in that day, saith the LORD of hosts, [that] I will cut off the names of the idols out of the land, and they shall no more be remembered: and also I will cause the prophets and the unclean spirit to pass out of the land.