“giving light to the eyes of your heart to know the hope of his calling, which is the riches of the glory of his inheritance in the saints and which is the exceeding greatness of his power toward us, those who believe, according to the outworking of his power and might.”
And thus, when there is light in the eyes of your heart — when the Holy Spirit has opened your eyes so that you may see with eyes of faith and not with natural sight — what is the end goal? It is that we may know the hope of God’s calling. This is a matter of both confidence and assurance.
Assurance is a question with which many Christians struggle. “How can I know that I am saved?” people often ask. Arguably the two most poignant passages that can be pointed to are in Habakkuk 2:4 and Romans 8:16. In the first, the prophet makes the very clear statement that the righteous shall live by faith. This passage, of course, is quoted by Paul in Romans 1:17, Galatians 3:11, and then in Hebrews 10:38. The second passage mentioned above speaks of the Holy Spirit testifying to our spirit that we are children of God. Since only those who are elect to salvation are God’s children, if the Holy Spirit so testifies to us that we are God’s children, then that is a mark of the faith we have.
True, these two passages are somewhat subjective. Nevertheless, they give you a clear starting point. Look at your life. Do you live righteously? Or, at least, do you try to do so to the best of your ability? And, when a Christian brother or sister points out sin in your life, do you seek to reform that sin because you want to honor Jesus by the way you live? If this describes you, it is a pretty good indication that you are a true Christian. And, if the testimony of the Holy Spirit affirms with your spirit that you are a born again believer — a child of God — then again, you should take this as assurance.
In a more objective sense, 1 John also offers us a very clear indicator of the mark of a Christian versus the mark of a non-Christian. There are various questions about what one believes regarding sin, regarding the person of Christ, and how one lives out their faith. One of the most striking questions that John asks is whether you love your brothers and sisters in faith. John goes as far as to say that if you see a fellow believer in need and you close your heart to him when you have the ability to help, then God’s love does not abide in you (1 John 3:17). In the verses that lead up to this statement, John addresses things from the other perspective and states that everyone who hates his brother is a murderer and eternal life does not dwell in him (1 John 3:15). So, more objectively, perhaps, you can ask yourself, have you hardened your heart against a fellow Christian and are refusing to help him or her when they have need? If so, you are not a believer according to the Apostle John. Repent and sin against your brother no more.
Faith gives assurance, but that faith needs to be a genuine faith — one that affects not just the perception you have of yourself but also the way you live. And that is where the boldness of hope comes into play. Part of the reason that the Christian does not live in the same way the world lives is because we have a hope of something better. What is the world to us when we are promised both heaven and a new creation? Why would we even want to build our treasure here where it can be spoiled or taxed away from us? No, as Christians we store up our treasures in heaven. We do not allow our churches to function as businesses; we function like military outposts in enemy territory, laboring to tear down every stronghold that raises itself up against the knowledge of God. We have the boldness or confidence to live in that way because we hav the hope of glory. Beloved, if you are a true Christian, you will seek to store your treasure in heaven and not on earth. Be at work building the Kingdom of Jesus Christ.