The abrupt ending of Acts after Paul's arrival in Rome leaves us thinking about the growth of the gospel and where it goes from here.
God is free to define Israel, to show mercy or wrath, and to add to Israel from the nations.
In the triumphant conclusion of Exodus, God filled his dwelling and led his people, which he does today in a much greater way.
Although it is impossible to say what is the best thing about being a Christian, the theme of Galatians 4:1-7 is an excellent candidate...