Adam Clarke on Revelation 3:9

I will make them - Show them to be, of the synagogue of Satan, who say they are Jews, pretending thereby to be of the synagogue of God, and consequently his true and peculiar children.

I will make them to come and worship - I will so dispose of matters in the course of my providence, that the Jews shall be obliged to seek unto the Christians for toleration, support, and protection, which they shall be obliged to sue for in the most humble and abject manner.

To know that I have loved thee - That the love which was formerly fixed on the Jews is now removed, and transferred to the Gentiles.