God gave us the indwelling Holy Spirit as the "earnest" of our eternal inheritance. Now if the Presence of the Holy Spirit in our hearts during our earthly existence isn't even called a "down payment" (which is usually much larger than the amount required for an earnest payment), then what is the magnitude of our inheritance? It is hard to think of the Holy Spirit's indwelling Presence as a gift to kind of tide us over in the earth until we receive "the real thing in its fullness." It makes you wonder what awaits us when we finally get out out these fragile earthly bodies and put on our glorified bodies! Paul wrote in his letter to the Ephesians:
Even when we were dead in our transgressions, [God] made us alive together with Christ (by grace you have been saved),
And raised us up with Him, and seated us with Him in the heavenly places, in Christ Jesus,
In order that in the ages to come He might show the surpassing riches of His grace in kindness toward us in Christ Jesus (Ephesians 2:5-7).
Do you think you are enjoying the grace of God now? No way. You don't have the facilities to enjoy the immeasurable grace of God. You don't have the "equipment" to enjoy it without measure or limitation. Enjoy what you have received, but always realize that what you have isn't all that He is going to give you! He is telling you through His Word that He is going to give you more.