Longer Catechism (Orthodox) 11.257

Chapter 11 — Part I — Article IX (Of the Church)

Section 257. Q. How are we further assured that the grace of God abides in the Church even till now, and shall abide in it to the end of the world? A. Of this we are assured by the following sayings of Jesus Christ himself and his Apostle: I will build my Church, and the gates of hell shall not prevail against it. Matt. xvi. 18. I am with you alway, even unto the end of the world. Amen. Matt. xxviii. 20. Unto him, God the Father, be glory in the Church by Christ Jesus throughout all ages, world without end. Amen. Eph. iii. 21.