1Everyone who believes that Jesus is the Christ has become a child of God. And everyone who loves the Father loves his children, too.
Genuine faith in God will express itself in gratitude and love for the Father and Jesus the Son. True faith and active love are inseparable, like The Father and The Son.
2We know we love God’s children if we love God and obey his commandments.
This is how we know, because the fruit of true Christian love is obedience to God. It is unselfish love for others.
3Loving God means keeping his commandments, and his commandments are not burdensome.
True children of God do not consider his commands a burden or a chore, they are not unpleasant. That is not to say they are easy to follow, but with the power of the Holy Spirit, we have the power and desire to do God's will.
4For every child of God defeats this evil world, and we achieve this victory through our faith. 5And who can win this battle against the world? Only those who believe that Jesus is the Son of God.
We can overcome the world with our faith. Our faith allows us to experience God's power and love in such a way that we can shield ourselves from the misguided values of this world.
6And Jesus Christ was revealed as God’s Son by his baptism in water and by shedding his blood on the cross—not by water only, but by water and blood. And the Spirit, who is truth, confirms it with his testimony. 7So we have these three witnesses--8the Spirit, the water, and the blood—and all three agree. 9Since we believe human testimony, surely we can believe the greater testimony that comes from God. And God has testified about his Son.10All who believe in the Son of God know in their hearts that this testimony is true. Those who don’t believe this are actually calling God a liar because they don’t believe what God has testified about his Son.
These verses most likely pertain to the baptism of Jesus by John the Baptist and then goes on to the power of the shedding of His blood by his crucifixion. So he was baptized in water, was beaten and his blood was spilled for us, then crucified on a cross to die for us. This is the testimony of God himself gave to us of his love for us.
11And this is what God has testified: He has given us eternal life, and this life is in his Son. 12Whoever has the Son has life; whoever does not have God’s Son does not have life.
Eternal life is not only a future hope but a present reality. This reality is based on our faith in Christ and the opportunity to experience personal companionship with him. All people should hear the message about Jesus and that he brings eternal life. Without faith in God's Son, you can not be received by the Father, and therefore with no relationship, you have no life.
13I have written this to you who believe in the name of the Son of God, so that you may know you have eternal life.
John wants to be very clear, that yes, we can know we have eternal life. He clearly outlines what it takes.
14And we are confident that he hears us whenever we ask for anything that pleases him. 15And since we know he hears us when we make our requests, we also know that he will give us what we ask for.
This is such an amazing verse. It should keep us in prayer constantly. We are told to be confident that God hears us regardless of what we ask. We can ask for anything as long as it lines up with his Word and is pleasing to him. So continue your prayers and have confidence in God's answers.
16If you see a fellow believer sinning in a way that does not lead to death, you should pray, and God will give that person life. But there is a sin that leads to death, and I am not saying you should pray for those who commit it.
Whenever you see someone living in sin, it is our job to pray for them, not condemn them. God wants them to have life like we as Christians have come to know it. Remember that all sin does not lead to death so we must pray for those sinners so they can know life.
17All wicked actions are sin, but not every sin leads to death. 18We know that God’s children do not make a practice of sinning, for God’s Son holds them securely, and the evil one cannot touch them
John clearly is distinguishing between two types of sin in this book. Less serious sins that do not lead to spiritual death (separation from a relationship with Christ) and sins so terrible, that the sinner purposefully and knowingly rebel against God and His Word, which can lead to spirit
19We know that we are children of God and that the world around us is under the control of the evil one.
20And we know that the Son of God has come, and he has given us understanding so that we can know the true God. And now we live in fellowship with the true God because we live in fellowship with his Son, Jesus Christ. He is the only true God, and he is eternal life.
21Dear children, keep away from anything that might take God’s place in your hearts.
In order to truly understand John's message, you must understand that Satan is the God of this corrupt world. Clearly our best defense against the evils of this world are to have that relationship with Christ. To know that the devil will be defeated and with the power of the Holy Spirit, we can ward off Satan's advances in the here and now. Do not allow anything to replace Jesus Christ in your heart.