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

Because Ephraim has been increasing altars for sin, altars have become a cause of sin to him.

Επειδη ο Εφραιμ επληθυνε τα θυσιαστηρια δια να αμαρτανη, θελουσι γεινει εις αυτον θυσιαστηρια του αμαρτανειν.

Because Ephraim hath made many altars to sin, altars shall be unto him to sin.