4 Whoever says “I know him” but does not keep his commandments ^cis a liar, and ^cthe truth is not in him, 5 but whoever ^dkeeps his word, in him truly ^ethe love of God is perfected. ^fBy this we may know that we are in him: 6 whoever says he ^gabides in him ^hought to walk in the same way in which he walked.

7 Beloved, I am writing you ⁱno new commandment, but ^jan old commandment ^kthat you had from the beginning. The old commandment is the word that you have heard. 8 At the same time, it is ^la new commandment that I am writing to you, which is true in him and in you, because^{1 m}the darkness is passing away and ⁿthe true light is already shining. 9 Whoever says he is in the light and ^ohates his brother is still in darkness. 10 Whoever loves his brother abides in the light, and in him² there is no ^pcause for stumbling.