“In Him, you also, after listening to the message of truth, the gospel of your salvation—having also believed, you were sealed in Him with the Holy Spirit of promise, who is given as a pledge of our inheritance, with a view to the redemption of God’s own possession, to the praise of His glory.” Ephesians 1:13–14.(NASB)
What does a pledge mean these days? A pledge might mean any of several things anymore but once it was a solemn promise and a large part of the payment, given in advance as a security that the whole promise will be paid afterwards. In the context of today’s verses; this pledge is made when God’s own Spirit comes to indwell in us and preserves our eternal salvation. Paul refers to an official mark of identification placed on a contract, or other document. Thereby placing that document officially under the authority of the person whose stamp was on the seal. Four primary truths are signified by the seal: 1) security; 2) authenticity; 3) ownership; and 4) authority. The Holy Spirit is given to us by God as His pledge of our future inheritance in glory. Yes, we fail to comprehend fully how God both choses us in Him before the foundation of the world (Ephesians 1:4) but seals us with his Spirit after we listen to and believe the message of salvation. It matters not that we do not fully understand but it matters much that we believe His words in Scripture. Believe both, God will sort it out.