objection
God still speaks
Objection
God still speaks, so modern revelation is possible.
What is true
God can guide, convict, and speak.
Why it is not enough
Galatians 1 still forbids a later message from redefining the apostolic gospel, even if the claim is angelic or prophetic.
Key question: Could a later prophet contradict the apostles and still be true?
Possibility is not authority
The Christian response is not that God is unable to speak. The response is that any claimed revelation must be tested by what God has already revealed through Christ and the apostles.
Galatians 1 deliberately uses the strongest possible example: even an angel from heaven is not allowed to bring a different gospel.
Open canon cannot erase the test
LDS teaching appeals to continuing revelation and additional scripture. That appeal does not settle whether the new message is true.
The first question is whether the later message preserves or changes the apostolic doctrine of God, Christ, church, authority, and salvation.
Primary references
These are the public sources behind the answer, with LDS doctrine cited from LDS material where possible.
Galatians 1
BibleRef
This is the public test for restoration claims and later revelation.
1 John 4
BibleRef
A testimony claim must be tested by apostolic doctrine.
Acts 17
BibleRef
Religious claims are tested publicly by the received word rather than accepted by assertion.
Articles of Faith
The Church of Jesus Christ of Latter-day Saints
LDS scripture affirming the Bible as far as translated correctly, additional scripture, continuing revelation, and laws and ordinances.
Bible, Topics and Questions
The Church of Jesus Christ of Latter-day Saints
Official LDS source affirming the Bible while teaching that additional scripture clarifies and corroborates the biblical witness.