The warnings came long before Jesus about the sons of Ishmael.
Genesis 16:10 The angel added, “I will increase your descendants so much that they will be too numerous to count.” 11 The angel of the LORD also said to her: “You are now pregnant and you will give birth to a son. You shall name him Ishmael,for the LORD has heard of your misery. 12
He will be a wild donkey of a man; his hand will be against everyone and everyone’s hand against him, and he will live in hostility toward all his brothers.”