Even when the Hebrew people in the Wilderness were at their worst, Moses upbraided them but did not leave them.
Even when Israel and Judah were "fornicating under every green tree," sinful enough to make themselves fodder for pagan invaders, the Prophets said "You will be knocked flat to the ground" but never said "I'm outta here."
Christ said He would never abandon us or leave us orphans, but would stay with us "until the end of the age." If you leave, it's like saying "I don't believe that."
We're in the beginning -- not the middle or the end --- of a period of hard suffering and purification. Christ will not give us a way to evade it: He will give us a way to go through it through Him, with Him, and in Him.
"The extreme greatness of Christianity lies in the fact that it does not seek a supernatural remedy for suffering but a supernatural use for it." - Simone Weil
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Indeed all those that have left must now return, If the church can see by the masses what they have done then perhaps we can rebuild it?
You cab leave the Roman sect and still be part of the Church. More fully a part as you are no longer supporting the organized crime racket and sex ring the Vatican has become