He who loves his brother remains in the light, and there is no occasion for stumbling in him.
"Again the false claims to knowledge by the opponents are stated first, this time introduced by the clause ’he who says’ (cf. 1 John 2:4; 1 John 2:6; 1 John 2:9). Each of these claims is again denied and the evidence or ’tests’ of the true knowledge of God is set forth: obeying his commands (1 John 2:5), walking in his likeness (1 John 2:6), and loving one’s brother (1 John 2:10)." [Note: Ibid.] 