Apringius of Beja (died mid sixth century) was an Iberian bishop.. He wrote a commentary on the book of Revelation in Latin. Two large fragments of this work survives today. The following is part of a commentary on Rev 21:12:
The twelve corners of the gates and the twelve gates
and the twelve foundations on which the names of the apostles and of the Lamb
are written yield the number of thirty-six. It is clear that this is the number
of hours that our Lord, Jesus Christ, lay in the grave after his passion. This
demonstrates that the host of leaders who came beforehand and the chorus of
apostles who came afterward had been redeemed by the one faith and passion of
the Lord and that they have come to the knowledge of the omnipotent God through
the one entrance of faith in Christ, who is the door. For also the names of the
apostles are said to be written on the twelve foundations, because Christ is
the foundation, as Paul says: “For no other foundation can anyone lay than that
which is laid, which is Jesus Christ.” And he himself is in each, and each is
in him. The Lord says, “You are Peter, and on this rock I will build my
church.” And it is written in the words of the most blessed Paul that “the rock
was Christ.” Therefore, it is Peter to whom the Lord spoke: “On this rock I
will build my church.” That is, the church is built on the faith in the
incarnation, passion and resurrection of the Lord. (“Explanation of
the Revelation by the Most Learned Man, Apringius, Bishop of the Church at Pax
[Julia],” in Latin Commentaries on Revelation [trans. William C.
Weinrich; Ancient Christian Texts; Downers Grove, Ill.: IVP Academic, 2011],
55-56)