2 Chronicles 7:14 King James Version (KJV) 14 If my people, which are called by my name, shall humble themselves, and pray, and seek my face, and turn from their wicked ways; then will I hear from heaven, and will forgive their sin, and will heal their land.
So very often GOD'S people need to repent. That is in the BIBLE. I would include myself, as being encouraged to grow spiritually and throw off sin from my own life. Since ALL believers are saved by God's grace, and no human is perfect in this life. I may be more serious about attempting to have good doctrines than many of these emergent churches, but still spiritual growth is a process no matter how you slice it. So anyone who denies that churches and Christians need to repent ever, should refer to the above referenced bible verse.