I have attended multiple Jehovah’s Witness meetings, even saying an Our Father and singing some of their songs (though omitting stuff I could not agree to) at them. Is that a mortal sin, or does it fall under the First Commandment?
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*]Are non-denominational Bible studies ok for Catholics?
*]Is it okay to attend a Protestant Bible study?
*]Why can’t we evangelize at a Protestant Bible study?
*]Is it a sin to worship in other Christian churches?