How do we know that the New Testament is God's authoritative word?
The apostolic sermons recorded by Luke in Acts demonstrate how the apostles preached the gospel from the Old Testament . The development of the New Testament canon begins with the writings of the apostles. Did the apostles understand they were writing Scripture? Two texts are helpful in determining that the apostles understood they were writing authoritative, Godinspired Scripture. 2 Peter 3:15-16—“And count the patience of our Lord as salvation, just as our beloved brother Paul also wrote to you according to the wisdom given him, as he does in all his letters when he speaks in them of these matters. There are some things in them that are hard to understand, which the ignorant and unstable twist to their own destruction, as they do the other Scriptures.” Peter acknowledges Paul’s writings and calls them “Scripture.” Grudem notes: “The word translated ‘scriptures’ here is graphe, a word that occurs fiftyone times in the New Testament and that refers to the Old Testament Scriptu...