Keeping the Commandments

1 John 2:3 - And by this we know that we have come to know him, if we keep his commandments.

So then, the certainty of faith depends on the grace of Christ alone; but piety and holiness of life distinguish true faith from that knowledge of God that is fictitious and dead, for the truth is that those who are in Christ, as Paul says, have taken off the old self (Colossians 3:9). - John Calvin, Commentary on 1 John

I have been studying 1 John tonight for Sunday School next weekend. Man, I really like reading what Calvin has to say about the Bible.