Genesis 21:11

“And the thing was very grievous in Abraham’s sight, etc.] The motion that Sarah made to turn out of his house Hagar and Ishmael was not agreeable to him, but the reverse; it seemed an ill thing to him; it was greatly displeasing to him, and he was unwilling to come into it: because of his son; his son Ishmael; not grieved and uneasy for what he had done; not for committing idolatry, as the Targum of Jonathan suggests, or for mocking at Isaac; but for what was proposed to be done to him, the ejection of him from his house, because of the great love he had for him, and the great concern he had for his education, and that he might enjoy the blessing promised him, he, was loath to have him cast…”

“21:11-13 Abraham was upset by Sarah’s demand to oust Hagar and Ishmael. God told him to comply, assuring Abraham that Ishmael would also have a future as Abraham’s offspring.”