On a high and lofty mountain
you have set your bed;
there also you went up to offer sacrifice. Bible see other translations

“you have set your bed.” It was common to set up idols on the tops of hills, and Israel’s idol worship on the mountains is described as adultery. Israel had made a covenant with God, who was to be her only love: “Thou shalt have no other gods beside me.” But she ignored the covenant and worshiped idols, in part because of the sex involved in the cultic practices. Although the heart of the people was not particularly inclined to follow God in the first place, the cultic sex of the idol worship helped drag them away, and sex still drags people away from the Lord.

Commentary for: Isaiah 57:7