Contemporary English Version
Israel, you have built many altars where you offer sacrifices for sin. But these altars have become places for sin.

Douay-Rheims Bible
Because Ephraim hath made many altars to sin: altars are become to him unto sin.

Because Ephraim hath made many altars to sin: altars are become to him unto sin.

many.

Hosea 10:1,2,8 Israel a vine full of branches, the fruit is agreeable to it: according to the multitude of his fruit, he hath multiplied altars, according to the plenty of his land he hath abounded with idols. . . .

Hosea 12:11 If Galaad be an idol, then in vain were they in Galgal offering sacrifices with bullocks: for their altars also are as heaps in the furrows of the field.

Isaiah 10:10,11 As my hand hath found the kingdoms of the idol, so also their idols of Jerusalem, and of Samaria. . . .

altars.

Deuteronomy 4:28 And there you shall serve gods, that were framed with men's hands: wood and stone, that neither see, nor hear, nor eat, nor smell.

Jeremiah 16:13 So I will cast you forth out of this land, into a land which you know not, nor your fathers: and there you shall serve strange gods day and night, which shall not give you any rest.