God further says to (now) Abraham, "These descendants are coming to come through your wife Sarah."
Remember these are very old people.
We may not be sure why Abraham and Sarah were chosen, but they were.
How difficult is it for Christians to accept and understand that Jews and Muslims are fellow descendants from Abraham?
How easy is it for us to give up on promises because they have been long deferred?
How are we responding to God's gift of covenant; are we blameless?
Lectio Divina: I will establish my covenant between me and you, and your offspring after you throughout their generations, for an everlasting covenant, to be God to you and to your offspring after you (Genesis 17:7).