The entire body of the faithful, anointed as they are by the Holy One, cannot err in matters of belief. They manifest this special property by means of the whole peoples' supernatural discernment in matters of faith when ‘from the Bishops down to the last of the lay faithful,’ they show universal agreement in matters of faith and morals. That discernment in matters of faith is aroused and sustained by the Spirit of truth. (Lumen Gentium #12)