Verses 19–21: We love, because He first loved us. If someone says, “I love God,” and hates his brother, he is a liar; for the one who does not love his brother whom he has seen, cannot love God whom he has not seen. And this commandment we have from Him, that the one who loves God should love his brother also.
John begins by affirming exactly what makes it possible for the believer to exhibit personal love for God the Father: because He first loved us. God took the initiative, the first step in reaching out to man by providing redemption for sinful mankind through His Son, Jesus Christ. For “while we were yet sinners, Christ died for us” (Romans 5:8b). This is the evidence of His first loving us. Our response is not to beat our chest and proclaim “I found God!” The right response is to diligently seek Him (Proverbs 8:17; Jeremiah 29:13) and to believe in Jesus Christ for salvation (Acts 16:31). The apostle Paul summarizes:
Now all these things are from God, who reconciled us to Himself through Christ and gave us the ministry of reconciliation, namely, that God was in Christ reconciling the world to Himself, not counting their trespasses against them, and He has committed to us the word of reconciliation. (2 Corinthians 5:18–19)
Duplicity of Love
It should be noted that the brother mentioned in verse 20 is not a sibling but specifically a fellow believer in Christ. John, the master of forthrightness, previously told us that the deceptive believer who hates his brother is in the darkness (2:9) and that “everyone who hates his brother is a murderer” (3:15). And now here, he clearly states that the one who claims to love God and hates his brother is an unequivocal liar. Darkness, murderer, liar is quite an indictment for the hating believer.
He follows with a logical conclusion to this indictment. Simply stated, if you hate your brother who you see, you cannot love God Who you have not seen. It is noteworthy that John points out that seeing someone becomes the basis of loving another. Often, someone’s visual characteristics will initiate attraction towards another, whether it is their face, hair style or the way they walk. For it stands to reason that it is more natural to love a real live human being that can be seen. How can there be genuine love expressed with someone met and conversed with on the internet that has never been actually seen? In our times, they may not even be a real live human; they could be an AI entity. Therefore, mankind was designed to have physical, tangible relationships with other people.
But in contrast, John is attempting to demonstrate that the most important relationship that man can have is with his Creator. That it may not be physical or observable with the human eye, yet this is far more real and authentic than a physical relationship because of the spiritual union the believer possesses with God. This is the abiding relationship that John has been discussing (4:16); it is an eternal relationship that is knowable because God has revealed Himself through His Word. And by learning and obeying the principles and directives in His Word we gain this intimate relationship with God that the unbeliever cannot. The Apostle Paul explains why this is so:
But a natural man does not accept the things of the Spirit of God, for they are foolishness to him; and he cannot understand them, because they are spiritually appraised. But he who is spiritual appraises all things, yet he himself is appraised by no one. For who has known the mind of the Lord, that he will instruct Him? But we have the mind of Christ. (1 Corinthians 2:14–16)
Paul develops this further, that the Holy Spirit assists the believer in comprehending His Word.
That He would grant you, according to the riches of His glory, to be strengthened with power through His Spirit in the inner man, so that Christ may dwell in your hearts through faith; and that you, being rooted and grounded in love, may be able to comprehend with all the saints what is the breadth and length and height and depth, and to know the love of Christ which surpasses knowledge, that you may be filled up to all the fullness of God. (Ephesians 3:16–19)
By being “filled up to all the fullness of God” the believer experiences a relationship with the God Who “first loved us.”
This Commandment
There is a commandment given by God that “you shall love your neighbor as yourself” (Leviticus 19:18; Matthew 22:39). But John is referring to a specific commandment when he says this commandment, one that Our Lord personally gave to His disciples prior to His death, to “love one another, just as He commanded us” (3:23):
“A new commandment I give to you, that you love one another, even as I have loved you, that you also love one another.” (John 13:34)
This is a reciprocal love that produces a harmonious relationship within the community of believers so that consequently “By this all men will know that you are My disciples, if you have love for one another” (John 13:35).
This presupposes the obedience of “the one who loves God” and corresponds with the mandate Our Lord described as “the great and foremost commandment” (Matthew 22:38): “you shall love the Lord your God with all your heart, and with all your soul, and with all your mind” (Matthew 22:37).
But here John integrates this great and foremost command with the directive Our Lord gave to the disciples during His Upper Room Discourse (John 14–17): “If you love Me, you will keep My commandments” (John 14:15).
Love for His Brother
To what degree are we to love fellow believers? It is worth quoting again the late Bible teacher Chester McCalley (1935-2000) and his concise summary of this type of love:
Love directed towards man is the mental attitude that demands that we do what is best for another in the light of eternity no matter what it costs us.1
This is in accordance with what Our Lord told His disciples:
“Greater love has no one than this, that one lay down his life for his friends.” (John 15:13)
And it is exactly what Our Lord did, having mentioned it 4 times in his discussion of the Good Shepherd laying down His life for the sheep (John 10: 11–18).
The apostle Paul succinctly outlined how Jesus Christ demonstrated His greater love for His sheep:
For while we were still helpless, at the right time Christ died for the ungodly. For one will hardly die for a righteous man; though perhaps for the good man someone would dare even to die. But God demonstrates His own love toward us, in that while we were yet sinners, Christ died for us. (Romans 5:6–8)
When we consider the enormity of His command to love our brother in Christ, are we willing and able to follow His example, no matter what it costs us?
[1] McCalley, Chester. http://wordoftruthkc.org/sites/default/files/file/Philippians%20Commentary.pdf, p. 4. [Retrieved April 19, 2025]
© David M. Rossi

