It was the Second Vatican Council in the 60s that also
reminded
believers that the truths of the Church are hierarchical, that is, while
truth remains, there is a level of importance of truths
to our salvation,
e.g., that Jesus is Lord is more important than the
virginity of Mary. The
belief that Mary was ever a Virgin remains true, it
neither equals nor
surpasses the truth of the divinity of Jesus. All truth
is to be believed.
Vatican Council II, On Ecumenism, No. 11
... in Catholic doctrine there exists an order
or "hierarchy“
of truths, since they vary in
their relation to the foundation of the
Christian faith.
Truths
are hierarchical