Public revelation and private revelation
There are two kinds of revelations in the terminology of the Catholic Church:
(a) universal revelations or public revelation, which are contained in the Sacred Scripture (Bible) or in the depositum of Apostolic tradition (deposit of faith) transmitted by the Church. These ended with the preaching of the Apostles and must be believed by all;
(b) particular or private revelations suggest a revelations given by God to an individuals for the spiritual benefit of the person, a specific group or the entire Church.
[Private revelation is] a normal manifestation of the presence of the Spirit of Christ in the Mystical Body and of His continued guidance of the Church. Without bringing anything new to the Catholic Faith, they draw attention to what in the faith is likely to meet the particular needs of the times.
Elizabeth A. Andersen, Mechthild of Magdeburg:
selections from The flowing light of the Godhead, p.12