For (Martin) Luther, the sola of "Sola Scriptura" was inseparably related to the Scriptures' unique inerrancy. It was because popes could and did err and because councils could and did err that Luther came to realize the supremacy of Scripture. Luther did not despise church authority, nor did he repudiate church councils as having no value. His praise of the Council of Nicaea is noteworthy. Luther and the Reformers did not mean by "Sola Scriptura" that the Bible is the only authority in the church; rather, they meant that the Bible is the only infallible authority in the church.