That wealthy supporters of the Catholic Church there could be explained because they interpret that Jesus was a good example of who takes major risks, (even killed), betting on a big gain, (eternal life).
It is conceivable that the poor adhere to the Catholic Church because it invites them to be kept in poverty, says it is very good to have material needs, living in austerity, not sticking to worldly goods.
Not as easy to understand why some rich also adhere to this impoverishing dogma.
I think a reasonable explanation would be:
The Holy Scriptures, (the Bible), are a series of text very difficult to understand. For this reason it is possible to assign almost any interpretation. For this task are the priests, religious, theologians. But not only these experts try to unravel the truths that are supposedly expressed in this book, other people, in an effort to take the best advantage of all their actions, seek to understand what has this long history, but like all the other players try to legitimize these supposed truths their own desires.
Therefore, the infinite ambiguity of the Bible also suggests that Jesus learned that resurrected after death, surrendered entrusted to be crucified, because this painful act would be rewarded with eternal life. In terms of business, nothing could be more profitable: to suffer the torments of this painful conviction, (the crucifixion), in exchange resurrected and live forever.
Very few humans would dismiss this opportunity. In fact, often suffer horrible sacrifices as a crucifixion without that we will provide some benefit. Humans usually immolate us free, selflessly. If we had a wonderful expectancy gain (eternal life), would look more decisively incurring the risks incurred Jesus, (opposing the powerful of its time).
In short: there are wealthy supporters of the Catholic Church could be explained because they interpret that Jesus was a good example of who takes major risks, (even killed), betting on a big gain (eternal life).
Note: Original in Spanish (without translation by Google): El negocio de la crucifixión.
(Este es el Artículo Nº 2.156)