How do we know the true church from false ones?

According to 2 Chronicles 30, there were commands given to gather at a specific location—the house of the Lord in Jerusalem—for worship. This embodies that God designates a true assembly where His Word is faithfully preached. The distinguishing factor of a true church is its commitment to proclaim Christ crucified, aligning with historical orthodoxy and rejecting any addition of man-made rituals or works. A crucial indicator is whether the church emphasizes the necessity of preaching Christ and maintaining Scriptural practices in its services.