'Altars' in the Bible

Because Ephraim hath multiplied altars for sinning, altars have been unto him for sinning.

Israel is a luxuriant vine, that putteth forth his fruit: according to the abundance of his fruit he hath multiplied his altars; according to the goodness of their land they have made goodly pillars.

Their heart is divided; now shall they be found guilty: he will smite their altars, he will destroy their pillars.

The high places also of Aven, the sin of Israel, shall be destroyed: the thorn and the thistle shall come up on their altars; and they shall say to the mountains, Cover us; and to the hills, Fall on us.

Is Gilead iniquity? they are altogether false; in Gilgal they sacrifice bullocks; yea, their altars are as heaps in the furrows of the field.