God has spoken

As an ordained minister in the PCA I took vows affirming my belief that the Westminster Confession of Faith is an accurate summary of the Bible's doctrine. That does not mean that I believe the WCF to be inspired by the Holy Spirit. Indeed, that belief is contrary to the Confession! Rather, it means that I am fully convinced that the writers of the WCF accurately summarized the Bible's doctrine. A part of that accurate summary is the following statement on the necessity of Scripture and the cessation of direct revelation from God.
Although the light of nature, and the works of creation and providence do so far manifest the goodness, wisdom, and power of God, as to leave men unexcusable; yet are they not sufficient to give that knowledge of God, and of his will, which is necessary unto salvation. Therefore it pleased the Lord, at sundry times, and in divers manners, to reveal himself, and to declare that his will unto his church; and afterwards, for the better preserving and propagating of the truth, and for the more sure establishment and comfort of the church against the corruption of the flesh, and the malice of Satan and of the world, to commit the same wholly unto writing: which maketh the holy Scripture to be most necessary; those former ways of God’s revealing his will unto his people being now ceased. (WCF 1.1, emphasis added)
Kevin DeYoung has posted a helpful piece on cessationism and the Westminster Confession of Faith - HERE.