Revelation 2:9, 13, 19

‘I know your suffering and your poverty (but you are rich), and how you are blasphemed and slandered by those who say they are Jews and are not, but are a synagogue of Satan [they are Jews only by blood, and do not believe and truly honor the God whom they claim to worship].

‘I know where you dwell, [a place] where Satan sits enthroned. Yet you are holding fast to My name, and you did not deny My faith even in the days of Antipas, My witness, My faithful one, who was killed (martyred) among you, where Satan dwells.

‘I know your deeds, your love and faith and service and patient endurance, and that your last deeds are more numerous and greater than the first.