Charles H. Spurgeon on Psalms 26:5

Wheresoever we perceive any people to worship God truly after his word, there we may be certain the church of Christ to be, unto the which we ought to associate ourselves, and to desire, with the prophet David, to praise God in the midst of this church. But if we behold, through the iniquity of time, congregations to be made with counterfeit religion, otherwise than the word of God doth teach, we ought then, if we be required to be companions thereof, to say again with David, "I have hated the synagogue of the malignant, and will not sit with the wicked." In the Apocalypse, the church of Ephesus is highly commended, because she tried such as said they were apostles and were not in deed, and therefore would not abide the company of them. Further, God commanded his people that they should not seek Bethel, neither enter into Galgala, where idolatry was used, by the mouth of his prophet Amos. John Philpot (Martyr). Burnt at Smithfield, 1555.