Matthew Henry's Complete Bible Commentary

Verse 17

See here, 1. That those are in the right that do not only receive instruction, but retain it, that do not let it slip through carelessness, as most do, nor let it go to those that would rob them of it, that keep instruction safely, keep it pure and entire, keep it for their own use, that they may govern themselves by it, keep it for the benefit of others, that they may instruct them; those that do so are in the way of life, the way that has true comfort in it and eternal life at the end of it. 2. That those are in the wrong that do not only not receive instruction, but wilfully and obstinately refuse it when it is offered them. They will not be taught their duty because it discovers their faults to them; that instruction which carries reproof in it they have a particular aversion to, and certainly they err; it is a sign that they err in judgment, and have false notions of good and evil; it is a cause of their erring in conversation. The traveller that has missed his way, and cannot bear to be told of it and shown the right way, must needs err still, err endlessly; he certainly misses the way of life. MHBCC 639.19