We see the righteousness of God on full display as He does exactly as He has promised - Sarah conceives and gives birth to Isaac. There is joy all around - or so it seems - for a while.

We also saw how Paul starts his letter to the Ephesians by (v3-14) by making clear distinctions between Israel and the nations through his use of pronouns. This sets up Paul's overall message of distinctions within unity (i.e. Gentile inclusion).