Charles Spurgeon Commentary 1 John 2:3

"And hereby we know that we know him, if we keep his commandments." — 1 John 2:3 (ASV)

And hereby we do know that we know him, if we keep his commandments.

Obedience is the test of discipleship. Mere head knowledge is all in vain, and all in vain our fears, unless we render a practical obedience to the commandments of Christ. We will not only savingly know him, but we will know that we know him, if we keep his commandments.