Revelation 3:9

‘Behold I give to you those of the synagogue of Satan, of those who say they are Jews but are not and do lie, behold, I will make them to come and worship before your feet, and to know that I have loved you.'

Once again we have reference to those Jews who deliberately sought to cause trouble with the authorities for the Christian church (compare on Revelation 2:9). Though they claim to be Jews, says Jesus, they are not really true Jews, for they do not obey the Law or show mercy (Matthew 23:23), or love Him as required by their God (John 8:39). They are simply liars like their father Satan, who is the chief adversary. They demonstrate that really they belong to his synagogue, and not God's.

But one day they will be made to acknowledge their error. In the words of Isaiah 60:14, ‘the sons of those who afflicted you will come bending to you, and all those who despised you will bow themselves down at the souls of your feet, and they will call you the city of the Lord, the Zion of the Holy One of Israel', and they will enter ‘the gates which are open continually' (Isaiah 60:11). So these false Jews will have to admit that these Christians whom they hate and despise are the true children of ‘the One Who is holy', and that they are the new Jerusalem, beloved of the Lord. Once again we have the interchange of thought between the Lord God and the Lord Christ. In the Greek ‘that  I  have loved  you ' is emphatic.