1)
What is the significance of "ve'Gam," which always comes to include?
1.
Seforno: This is another reason for Avraham not to be perturbed at sending Yishmael away - since he was (genetically) not his son, but the son of a slave. 1
2)
Why did HaSh-m tell Avraham that he would turn Yishmael into a nation because he was his offspring?