You have been forever marked with God’s “seal of approval” which is the indwelling presence of the Holy Spirit.
And you also were included in Christ when you heard the word of truth, the gospel of your salvation. Having believed, you were marked in him with a seal, the promised Holy Spirit, who is a deposit guaranteeing our inheritance until the redemption of those who are God’s possession—to the praise of his glory.
“Having believed…” is a simple phrase with eternal consequences. This is not the kind of belief that one casually stumbles upon, but the kind that affects deep and lasting change. The demons “believe” all the same things that your average Christian believes (James 2:19); yet that kind of belief changes nothing. It is my great fear that while most people in America “believe” in God intellectually, it isn’t the kind of saving belief that this passage is talking about.
That being said… if you DO believe in a saving way then Praise God! You have been forever marked with God’s “seal of approval” which is the indwelling presence of the Holy Spirit. Your salvation is secure as well as your inheritance in Heaven.
This is the testimony of every Child of God. This is the reality that anchors our hope and secures our future. This is the prize that was purchased with the precious blood of Jesus, which was drawn from the never-ending well of God’s love, grace and mercy. This is the prize that is mine, and hopefully, yours as well.