As we come to the conclusion of John's epistle, John shares the purpose of his letter, that 'you may know that you have eternal life'. John desires to affirm the faith of those in the church and he wants them to have certainty, confidence that they are in Christ and have received eternal life. God has given them eternal life through his Son, Jesus Christ. If we have faith in the Son, we have received eternal life.
In our text today, John uses courtroom terminologies as he summarizes his case that Jesus is God. Using words like testimony and witness further prove to his readers that what John is stating is fact beyond any doubt. Today we will explore these truths and understand why it is so important to have a right understanding of who Jesus is and what he has accomplished on our behalf.
As long as we live on this earth, we are engaged in a spiritual battle; a battle for our faith, the allegiance of our hearts, even our very souls. Scripture speaks frequently and directly about the spiritual battle we are engaged in. And John specifically encourages and instructs the church how to overcome the world.
Assurance of salvation is a blessed gift. And God wants his children to have assurance not only of His love, but also of their eternal, righteous standing before him; lest they fear the coming Day of Judgment. We can live in peace and indeed eager expectation of the coming of the Lord and have confidence for the Day of Judgment if we examine our hearts and find evidence of the work of the Holy Spirit. If we are in Christ, when we examine our life, we should see the indwelling presence and effect of the Holy Spirit, a sincere confession that Jesus is the Son of God and a heart that is full of love for our brothers and sisters in Christ.