Knowledge is acquired through teaching and learning, these verses show; it raises the rank of those who possess it, leads to faith and obliges one to act as it requires. They censure arguing without knowledge, value understanding (fiqh), and recall what Allah has kept to His own knowledge, as well as how little knowledge man has been given.
Verses gathered from a topical index of the Quran, in Mushaf order; every verse is quoted in full.
Say, "He is the [one] Able to send upon you affliction from above you or from beneath your feet or to confuse you [so you become] sects and make you taste the violence of one another." Look how We diversify the signs that they might understand.
And it is not for the believers to go forth [to battle] all at once. For there should separate from every division of them a group [remaining] to obtain understanding in the religion and warn [i.e., advise] their people when they return to them that they might be cautious.