There’s been some recent discussion on Catholic blogs about the relevance of personal experience in conversations about how the Church can provide community and pastoral care to gay and lesbian Catholics who are seeking to be faithful to Church teaching. In order to answer this specific question, it’s worth examining the relationship between revelation and experience more generally.
The Theology of the Body is a collection of addresses given by Pope John Paul II in the late 1970s and early 1980s and addressed to understanding the body and human sexuality in light of the Gospel. In a footnote to the General Audience of September 26, 1979, he wrote:
When we speak here about the relationship between “experience” and “revelation,” indeed about a surprising convergence between them, we only wish to observe that man, in his present state of existence in the body, experiences many limits, sufferings, passions, weaknesses, and finally death itself, which relates his existence at the same time to another and different state or dimension. When St. Paul speaks about the “redemption of the body,” he speaks with the language of revelation; experience is not, in fact, able to grasp this content or rather reality. At the same time, within this content as a whole, the author of Romans 8:23 takes up everything that is offered to him, to him as much as in some way to every man (independent of his relationship with revelation), through the experience of human existence, which is an existence in the body.
We therefore have the right to speak about the relationship between experience and revelation; in fact, we have the right to raise the issue of their relation to each other, even if many think that a line of total antithesis and radical antinomy passes between them. This line, in their opinion, must certainly be drawn between faith and science, between theology and philosophy. In formulating this point of view, they consider quite abstract concepts rather than the human person as a living subject.