Bad theology dishonors God and hurts people. Churches that sever the root of truth may flourish for a season, but they will wither eventually or turn into something besides a Christian church.
John PiperMissions is not the ultimate goal of the church. Worship is. Missions exists because worship doesn't.
John PiperA Christian is not a person who believes in his head the teachings of the Bible. Satan believes in his head the teachings of the Bible! A Christian is a person who has died with Christ, whose stiff neck has been broken, whose brazen forehead has been shattered, whose stony heart has been crushed, whose pride has been slain, and whose life is now mastered by Jesus Christ.
John Piper