I like the summary comment Schreiner makes at the end of the introduction to his New Testament Theology:
The new creation is coming (Rev. 21:1-22:5), wherein God will make good on all the promises uttered. But the sum and substance of the promise is that God and the Lamb will reside with believers and dwell with them forever.—Thomas Schreiner, New Testament Theology: Magnifying God in Christ, 37.
The capstone of all biblical theology is summed up in the words "they will see his face" (Rev. 22:4).