1 John 2:5 in the King James Version
But whoso keepeth his word, in him verily is the love of God perfected: hereby know we that we are in him.
Context
4 One who says, “I know him,” and doesn’t keep his commandments, is a liar, and the truth isn’t in him.
5 But God’s love has most certainly been perfected in whoever keeps his word. This is how we know that we are in him:
6 he who says he remains in him ought himself also to walk just like he walked.