Tests of True Knowledge

3 We know that we have come to know him if we keep his commands. 4 Whoever says, "I know him," but does not do what he commands is a liar, and the truth is not in that person. 5 But if anyone obeys his word, love for God[1] is truly made complete in them. This is how we know we are in him: 6 Whoever claims to live in him must live as Jesus did.

7 Dear friends, I am not writing you a new command but an old one, which you have had since the beginning. This old command is the message you have heard. 8 Yet I am writing you a new command; its truth is seen in him and in you, because the darkness is passing and the true light is already shining. 9 Anyone who claims to be in the light but hates a brother or sister[2] is still in the darkness. 10 Anyone who loves their brother and sister[3] lives in the light, and there is nothing in them to make them stumble. 11 But anyone who hates a brother or sister is in the darkness and walks around in the darkness. They do not know where they are going, because the darkness has blinded them.

Matthew Henry's Commentary on 1 John 2:3-11

Commentary on 1 John 2:3-11

(Read 1 John 2:3-11)

What knowledge of Christ can that be, which sees not that he is most worthy of our entire obedience? And a disobedient life shows there is neither religion nor honesty in the professor. The love of God is perfected in him that keeps his commandments. God's grace in him attains its true mark, and produces its sovereign effect as far as may be in this world, and this is man's regeneration; though never absolutely perfect here. Yet this observing Christ's commands, has holiness and excellency which, if universal, would make the earth resemble heaven itself. The command to love one another had been in force from the beginning of the world; but it might be called a new command as given to Christians. It was new in them, as their situation was new in respect of its motives, rules, and obligations. And those who walk in hatred and enmity to believers, remain in a dark state. Christian love teaches us to value our brother's soul, and to dread every thing hurtful to his purity and peace. Where spiritual darkness dwells, in mind, the judgment, and the conscience will be darkened, and will mistake the way to heavenly life. These things demand serious self-examination; and earnest prayer, that God would show us what we are, and whither we are going.