The seemingly strange account of Abram and Sarai faking out Pharaoh is a microcosm of the later Exodus account. Abram and the descendants of Israel initially were welcomed and exalted, but then they were seen as a curse and told to leave, sent away with many gifts and riches.
Revelation fortells of a time when those who trust completely in God and aren’t fooled by the beast, his image and the number of his name will sing “the song of Moses” and “the song of the Lamb” (Rev. 15:2–4).
We know of the “song of the Lamb” from Revelation 5. There’s the “song of Moshe” in Exodus 15 just after God saves Israel and destroys the Egyptian army in the Red Sea. There’s also another “song” of Moshe in Deuteronomy 32, and understanding it helps us understand apostle Paul’s terms “under [the] law” and “under grace.”
Ziba comes to David with some of Mephibosheth’s wealth and brought it to David on the pretext of pledging loyalty to David. Ziba tells David that Mephibosheth has purposefully refused to flee with David and stay behind to possibly gain the throne for himself. This chapter structured to highlight betrayal to show us that a particular individual, David was betrayed and that His descendant, the Messiah would be betrayed in a similar way.