To Cap off the Belgic Confession's teaching on Revelation Mr. Luke Gossett teaches article 7 and the sufficiency of Scripture.

Belgic Confession, Article 7- -The Sufficiency of Scripture--We believe that this Holy Scripture contains the will of God completely and that everything one must believe to be saved is sufficiently taught in it. For since the entire manner of service which God requires of us is described in it at great length, no one-even an apostle or an angel from heaven, as Paul says-ought to teach other than what the Holy Scriptures have already taught us. For since it is forbidden to add to or subtract from the Word of God, this plainly demonstrates that the teaching is perfect and complete in all respects.--Therefore we must not consider human writings-no matter how holy their authors may have been-equal to the divine writings- nor may we put custom, nor the majority, nor age, nor the passage of time or persons, nor councils, decrees, or official decisions above the truth of God, for truth is above everything else. For all human beings are liars by nature and more vain than vanity itself. --Therefore we reject with all our hearts everything that does not agree with this infallible rule, as we are taught to do by the apostles when they say, -Test the spirits to see if they are of God,-and also, -If anyone comes to you and does not bring this teaching, do not receive him into your house.-

Belgic Confession, Article 6- -The Difference between Canonical and Apocryphal Books -https---threeforms.org-the-belgic-confession--6--We distinguish between these holy books and the apocryphal ones, which are- the third and fourth books of Esdras- the books of Tobit, Judith, Wisdom, Jesus Sirach, Baruch- what was added to the Story of Esther- the Song of the Three Children in the Furnace- the Story of Susannah- the Story of Bel and the Dragon- the Prayer of Manasseh- and the two books of Maccabees.--The church may certainly read these books and learn from them as far as they agree with the canonical books. But they do not have such power and virtue that one could confirm from their testimony any point of faith or of the Christian religion. Much less can they detract from the authority of the other holy books.

How should protestants view the Apocrypha? Mr. Luke Gossett teaches us from the Belgic Confession

The Canon and Christ from the Belgic Confession

Belgic Confession, Article 5- The Authority of Scripture--We receive all these books and these only as holy and canonical, for the regulating, founding, and establishing of our faith. And we believe without a doubt all things contained in them - not so much because the church receives and approves them as such but above all because the Holy Spirit testifies in our hearts that they are from God, and also because they prove themselves to be from God. For even the blind themselves are able to see that the things predicted in them do happen.