^4-6 If someone claims, “I know him well!” but doesn’t keep his commandments, he’s obviously a liar. His life doesn’t match his words. But the one who keeps God’s word is the person in whom we see God’s mature love. This is the only way to be sure we’re in God. Anyone who claims to be intimate with God ought to live the same kind of life Jesus lived.

^17-20 It was soon news all over Ephesus among both Jews and Greeks. The realization spread that God was in and behind this. Curiosity about Paul developed into reverence for the Master Jesus. Many of those who thus believed stepped out into the light and made a clean break with their secret sorceries. All kinds of witches and warlocks came out of the woodwork with their books of spells and incantations and made a huge bonfire of them. Someone estimated their worth at fifty thousand silver coins. In such ways it became evident that the Word of the Master was now sovereign and prevailed in Ephesus.

^6-7 If we claim that we experience a shared life with him and continue to stumble around in the dark, we’re obviously lying through our teeth—we’re not living what we claim. But if we walk in the light, God himself being the light, we also experience a shared life with one another, as the sacrificed blood of Jesus, God’s Son, purges all our sin.