"Binding & loosing"? Isaias 53? No Part with Christ? Spirit & soul? Heretic popes, Indefectible church?

Power of "binding and loosing" - What does it mean? Why did Christ give it twice? Isaias 53:10 -"The Lord was pleased to bruise Him"? The Last Supper: Peter would have "no part" with Christ? Why "spirit, soul, and body"? Catholics' daily prayers? Overwhelmed by private devotions? Would man fall without Satan? Benefit from invalid Masses? Tasting cooking vs Communion fast? First Fridays/Saturdays: Is once enough? "Heretic popes for 70 years": Church indefectible? July honors Precious Blood of Jesus!