1 Peter 1:4 To an inheritance incorruptible, and undefiled, and that fadeth not away, reserved in heaven for you.
The major promise of the Bible beginning with Abraham and ending in Revelation is the promise of Land, the Promised Land, the Kingdom of God, Eternal Life, Heaven, an Inheritance incorruptible. This ”land,” this inheritance, is reserved in heaven for you. The story begins in a Paradise garden and ends in a Paradise city. In between, the promise works out in a land, a people, a nation, a kingdom, a Person, a Church, and a heaven reserved.
An inheritance is something substantial that belongs to us now already but it is not yet ours in visible reality, and the kingdom (inheritance) is guaranteed. The indwelling Holy Spirit is the guarantee of our inheritance. By faith in Jesus Christ the kingdom is within us, and we await the full revelation. ”The best is yet to come,” but meanwhile, we have the hope and the promise in our hearts. This promise fills our days with joy and peace in believing.