I believe that when God said He would pour out His Spirit on all flesh that He meant ALL flesh. That would include Catholics and Protestants; young, middle aged and old; married, divorced, single; Baptist, Methodist, Pentecostal, independent; rich and poor and those in between et.al.
Back in the nineteen sixties when folks started receiving the Holy Ghost Baptism with gifts of the Spirit being manifested, I (and many others) looked down my self-righteous nose at them. How could they be receiving the HGB? They didn't come to us, and God knows we have an exclusive franchise on His Spirit. Besides, these people don't even look like (cookie cutter) Christians.
Thank God that He has so much more love, compassion, and wisdom than I do. Thank God He has opened up my mind and my heart.
"If you believe that Jesus is the Christ --that he is God's Son and your Savior-- then you are a child of God. And all who love the Father love his children too."
1 John 5:1 TLB
See subsequent post for an article on this.