No Other Gospel

God revealed His plan of salvation through people like Moses, and the prophets of the Old Testament, then through John the Baptist, and Jesus, and the apostles. The revelation of God'struth and how to follow Him is contained completely in the Bible. The Bible contains all the truthwe need to know, and there is no more truth to be dispensed beyond the end of the Bible (Jude 1:3, Revelation 22:18).

There is no other gospel (Galatians 1) besides the one God has given to us. God can and still does speak to people, but He will not reveal new truths. Those who claim that God spoke to them may be tested in that the content of their claims must be consistent with the Bible. God will not contradict the Bible. There is no new truth after Revelation, so whoever claims to have new truths/doctrine i.e. a new plan of salvation, or claiming additional material as new books to be as holy and authoritative as the Bible, and to add to what God already has given us is false. There is such thing as demons and false prophets and anti-Christs, and there is such thing as people who are simply and earnestly trying to be good and spiritual, so misleading prophecies and claims may come from demonic influences or may come from earnest morality and spirituality. None of these is from God unless it is consistent with scripture. There is only one gospel, and it is that we are sinners, that salvation comes by faith from God in Jesus Christ alone.