The LORD's people received double at his hand - they were his people and they knew better.

His people grieved him worse than those who were not his people.

Isaiah 40:2 Speak ye comfortably to Jerusalem, and cry unto her, that her warfare is accomplished, that her iniquity is pardoned: for she hath received of the LORD’S hand double for all her sins.

Jeremiah 16:18 And first I will recompense their iniquity and their sin double; because they have defiled my land, they have filled mine inheritance with the carcases of their detestable and abominable things.

So, when the new testament Mystery, Babylon also receives double:

Revelation 18:6 Reward her even as she rewarded you, and double unto her double according to her works: in the cup which she hath filled fill to her double.

Does it say anything about her relationship with Jesus before she descended into such great whoredoms?