I believe you will find a clue to the answer of your question in verse 5.
Revelation 2:5
5 Remember therefore from where you have fallen; repent and do the first works, or else I will come to you quickly and remove your lampstand from its place -- unless you repent.
And a full explanation in James.
James 2:1-9
My brethren, do not hold the faith of our Lord Jesus Christ, the Lord of glory, with partiality. 2 For if there should come into your assembly a man with gold rings, in fine apparel, and there should also come in a poor man in filthy clothes, 3 and you pay attention to the one wearing the fine clothes and say to him, "You sit here in a good place," and say to the poor man, "You stand there," or, "Sit here at my footstool," 4 have you not shown partiality among yourselves, and become judges with evil thoughts?
5 Listen, my beloved brethren: Has God not chosen the poor of this world to be rich in faith and heirs of the kingdom which He promised to those who love Him? 6 But you have dishonored the poor man. Do not the rich oppress you and drag you into the courts? 7 Do they not blaspheme that noble name by which you are called?
8 If you really fulfill the royal law according to the Scripture, "You shall love your neighbor as yourself," you do well; 9 but if you show partiality, you commit sin, and are convicted by the law as transgressors.
NKJV