A common “proof-text” Latter-day Saints use to support God speaking to prophets being ‘normative’ and not ‘extraordinary’ is Amos 3:7. In a book on the ‘sufficiency’ of the Bible from a Protestant perspective, Noel Weeks wrote the following, appealing to Amos 3:7 as support for the claim that:
Scripture has a predominately prophetic
character. Events occur as prophets have foretold. Before things come to pass,
God declares them beforehand through his prophets (Isa. 48:5; Amos 3:7). (Noel
Weeks, The Sufficiency of Scripture [Edinburgh: The Banner of Truth
Trust, 1988, 1998], 49)
Ultimately, it comes down to the question of whether public
revelation has ceased (which the Bible does not teach, eisegesis
of Jude 3 and other texts notwithstanding) or whether it persists.
On Amos 3 and how it supports a doctrine of the 'divine council,' see David E. Bokovoy, "בקעי תיבב ודיעהו ועמש: Invoking the Council as Witnesses in Amos 3:13," JBL 127, no. 1 (Spring, 2008): 37-51