Rome often asserts that it is the one and only true church, that only it is infallible and all the truth stems from it. You can find this in 1 Timothy 3:15.
"15 if 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."
But what is a pillar or foundation? It is something that holds something else up. The church as a pillar or foundation holds the truth up high, but the church itself isn't the truth.
If a church carries false teaching, the truth would weaken the church itself and the pillar collapses.
Pillars that are not properly made will nor be able support the weight it is having to lift, how can a false church lift up the truth if it is devoid of it or only contains elements of truth to begin with?
I am not talking about disputable matters, but I am talking about the essentials.
As pointed out by me in previous papers as well as in works by James White, Keith Thompson, William Webster, Robert Zins etc, The Roman Catholic church has added numerous and countless contrived, unnecessary teachings no Christian is required to observe, let alone should observe.
No church is infallible, but it should have a strong foundation for it to be biblically viable.
Rome with all its teachings on transubstantiation, prayers for the dead, mariolatry, idolatry, purgatory, salvation by works, denial of justification by faith alone, barely qualifies as the pillar that holds the truth up.
If the right materials are absent, the pillar will not last.
If you want to be a pillar and foundation of the truth, ditch lies and pray for the Catholic people to repent.