For some equal time, here’s the link to Hugh Niblety’s essay “The Passing of the Primitive Church: Forty Variations on an Unpopular Theme”
The following verses suggest that apostasy was not possible, and questions are submitted to our non-Catholic friends for their consideration.
Matthew 16:18
And I tell you that you are Peter, and on this rock I will build my church, and the gates of Hades will not overcome it.
Q: If Jesus promised to build his own church and that Church fell into apostasy, does this mean that a) Jesus was a liar, b) Jesus did not have the power to protect his own church, or c) Jesus was incompetent as a church builder?
Matthew 28:20
And surely I am with you always, to the very end of the age.
Q: If the Church fell into apostasy for 1800 years, did Jesus remain with the Church “always” as possible?
John 14:15-16
15"If you love me, you will obey what I command. 16And I will ask the Father, and he will give you another Counselor to be with you forever—
Q: If the Church fell into apostasy, did Jesus not give the Counselor or did the Counselor simply fail to remain with the Church “forever”?
John 14:18
18I will not leave you as orphans; I will come to you.
Q: If the Church fell into apostasy, did Jesus actually leave us as “orphans” during all that time?
John 14:26
26But the Counselor, the Holy Spirit, whom the Father will send in my name, will teach you all things and will remind you of everything I have said to you.
Q: Despite this promise, did the Holy Spirit fail to teach the Church “all things” or to remind the Church of the things that Jesus had said to the Apostles?
John 16:13
But when he, the Spirit of truth, comes, he will guide you into all truth. He will not speak on his own; he will speak only what he hears, and he will tell you what is yet to come.
Q: Did the Holy Spirit fail to guide the Church into all truth?
Now, consider the following three verses:
1 John 4:4
4You, dear children, are from God and have overcome them, because the one who is in you is greater than the one who is in the world.
1 Timothy 3:13
15if I am delayed, you will know how people ought to conduct themselves in God’s household, which is the church of the living God, the pillar and foundation of the truth.
Mark 3:27
27In fact, no one can enter a strong man’s house and carry off his possessions unless he first ties up the strong man. Then he can rob his house.
Q: Is Satan stronger than Jesus, is the Church the household of God, and can Satan rob the Church of the deposit of truth by “binding” Jesus in any way?
In light of the above, is it possible that the Church fell into apostasy? Taken individually, each of these verses creates a problem for those that assert that the Church “went off the rails” at some point in history. Taken as a whole, they portray Christ’s own involvement in building, nurturing and protecting His Church until the end of time. The Catholic Church remains strong and vibrant – not by her own efforts or innate qualities – but because God Himself is leading and guiding her to ensure that “the gates of hell will not overcome it.”