Answer: This is how we know who the children of the devil are: Anyone who does not do what is right is not a child of God; nor is anyone who does not love his brother, (verse 10).
MORE INFORMATION AND/OR OTHER SCRIPTURE REFERENCES:
John 13:34-35: [Jesus said,] "A new command I give you: Love one another. As I have loved you, so you must love one another. By this all men will know that you are My disciples, if you love one another."
Romans 12:9-10: "Love must be sincere. Hate what is evil; cling to what is good. Be devoted to one another in brotherly love. Honor one another above yourselves."
Romans 13:8-10: "Let no debt remain outstanding, except the continuing debt to love one another, for he who loves his fellowman has fulfilled the law. The commandments, 船o not commit adultery,' 船o not murder,' 船o not steal,' 船o not covet,' and whatever other commandment there may be, are summed up in this one rule: 銑ove your neighbor as yourself.' Love does no harm to its neighbor. Therefore love is the fulfillment of the law."
Galatians 5:13-15: "You, my brothers, were called to be free. But do not use your freedom to indulge the sinful nature; rather, serve one another in love. The entire law is summed up in a single command: 銑ove your neighbor as yourself.' If you keep on biting and devouring each other, watch out or you will be destroyed by each other."
Ephesians 4:2-3: "Be completely humble and gentle; be patient, bearing with one another in love. Make every effort to keep the unity of the Spirit through the bond of peace."
Hebrews 10:24-25: "And let us consider how we may spur one another on toward love and good deeds. Let us not give up meeting together, as some are in the habit of doing, but let us encourage one another--and all the more as you see the Day approaching."
1 Peter 1:22-23: "Now that you have purified yourselves by obeying the Truth so that you have sincere love for your brothers, love one another deeply, from the heart. For you have been born again, not of perishable seed, but of imperishable, through the living and enduring Word of God."
1 Peter 3:8-9: "Finally, all of you, live in harmony with one another; be sympathetic, love as brothers, be compassionate and humble. Do not repay evil with evil or insult with insult, but with blessing, because to this you were called so that you may inherit a blessing."
1 John 2:9-11: "Anyone who claims to be in the light but hates his brother is still in the darkness. Whoever loves his brother lives in the Light, and there is nothing in him to make him stumble. But whoever hates his brother is in the darkness and walks around in the darkness; he does not know where he is going, because the darkness has blinded him."
1 John 3:11-24: "This is the message you heard from the beginning: We should love one another. Do not be like Cain, who belonged to the evil one and murdered his brother. And why did he murder him? Because his own actions were evil and his brother's were righteous. Do not be surprised, my brothers, if the world hates you. We know that we have passed from death to life, because we love our brothers. Anyone who does not love remains in death. Anyone who hates his brother is a murderer, and you know that no murderer has eternal life in him. This is how we know what love is: Jesus Christ laid down His life for us. And we ought to lay down our lives for our brothers. If anyone has material possessions and sees his brother in need but has no pity on him, how can the love of God be in him? Dear children, let us not love with words or tongue but with actions and in Truth. This then is how we know that we belong to the Truth, and how we set our hearts at rest in His presence whenever our hearts condemn us. For God is greater than our hearts, and He knows everything. Dear friends, if our hearts do not condemn us, we have confidence before God and receive from Him anything we ask, because we obey His commands and do what pleases Him. And this is His command: to believe in the Name of His Son, Jesus Christ, and to love one another as He commanded us. Those who obey His commands live in Him, and He in them. And this is how we know that He lives in us: We know it by the Spirit He gave us."
1 John 4:7-21: "Dear friends, let us love one another, for love comes from God. Everyone who loves has been born of God and knows God. Whoever does not love does not know God, because God is love. This is how God showed His love among us: He sent His One and Only Son into the world that we might live through Him. This is love: not that we loved God, but that He loved us and sent His Son as an atoning sacrifice for our sins. Dear friends, since God so loved us, we also ought to love one another. No one has ever seen God; but if we love one another, God lives in us and His love is made complete in us. We know that we live in Him and He in us, because He has given us of His Spirit. And we have seen and testify that the Father has sent His Son to be the Savior of the world. If anyone acknowledges that Jesus is the Son of God, God lives in Him and He in God. And so we know and rely on the love God has for us. God is love. Whoever lives in love lives in God, and God in him. In this way, love is made complete among us so that we will have confidence on the day of judgment, because in this world we are like Him. There is no fear in love. But perfect love drives out fear, because fear has to do with punishment. The one who fears is not made perfect in love. We love because He first loved us. If anyone says, 選 love God,' yet hates his brother, he is a liar. For anyone who does not love his brother, whom he has seen, cannot love God, Whom he has not seen. And He has given us this command: Whoever loves God must also love his brother."
2 John 1:4-6: "It has given me great joy to find some of your children walking in the Truth, just as the Father commanded us. And now, dear lady, I am not writing you a new command but one we have had from the beginning. I ask that we love one another. And this is love: that we walk in obedience to His commands. As you have heard from the beginning, His command is that you walk in love."
