"Sola scriptura" is a doctrine that is not, in the words of the Westminster Confession of Faith 1.6 "expressly set down in Scripture". However, the Confession claims that it passes the second test of being part of "the whole counsel of God" because it is "deduced from Scripture" "by good and necessary consequence", citing passages such as Isaiah 8:20: "To the law and to the testimony: if they speak not according to this word, it is because there is no light in them." Jesus is also typically understood by Protestants as expressly nullifying unscriptural traditions in the (Jewish) church, when he says, for example in Mark 7:13: "thus making void the word of God by your tradition that you have handed down. And many such things you do."