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Confession of sins to a priest (a mediator between God and man)
See I Timothy 2:5—“For there is one God, and one mediator between God and men, the man Christ Jesus” / I Peter 2:5 (speaking of all Christians being a priesthood)
Prayers to dead saints
Veneration of (or praying to) statues and images
Offering of masses, prayers and rosaries for those who suffer in “purgatory”
See Hebrews 9:27—“…Man is destined to die once, and after that to face judgment.”)
This list is by no means complete.

