And do not presume to say to yourselves, ‘We have Abraham as our father,’ for I tell you, God is able from these stones to raise up children for Abraham.
Matthew 3:9

"Children for Abraham" from stones has three meanings. 1: Being a child of Abraham is more than just being a genetic descendant and isn't limited to that. 2: God gave Jacob marked sheep from unmarked parents, prophesying the grafting of gentiles into Israel. God can create an Israelite out of anyone. 3: The hard hearts of the Pharisees/Sadducees separated them from Abraham, but Yeshua can restore them.

At the start of the Messianic Era, #yeshua will divide sheep from goats, Jacob's flock from Laban's, and the wheat from the tares. Even when false or ignorant teachers can't tell them apart, like Laban's shepherds, Yeshua knows his own and will call them out to join Israel.