William Barclay's Daily Study Bible - 1 John 5:16-17
5:16-17 If anyone sees his brother sinning a sin which is not a sin whose end is death, he will ask life for him and he will give it to him, that is, to those whose sin is not a sin whose end is death. There is a sin whose end is death. It is not about that that I mean he should ask. All wrongdoing is sin; but there is a sin whose end is not death. There is no doubt that this is a most difficult and disturbing passage. Before we approach its problems, let us look at its certainties. John... read more
Matthew Henry's Complete Commentary - 1 John 5:14-17
Here we have, I. A privilege belonging to faith in Christ, namely, audience in prayer: This is the confidence that we have in him, that, if we ask any thing according to his will, he heareth us, 1 John 5:14. The Lord Christ emboldens us to come to God in all circumstances, with all our supplications and requests. Through him our petitions are admitted and accepted of God. The matter of our prayer must be agreeable to the declared will of God. It is not fit that we should ask what is contrary... read more