﴿ وَجَآءَ إِخْوَةُ يُوسُفَ فَدَخَلُوا۟ عَلَيْهِ فَعَرَفَهُمْ وَهُمْ لَهُۥ مُنكِرُونَ ﴾

“AND [after some years,] Joseph's brothers came [to Egypt] and presented themselves before him: and he knew them [at once], whereas they did not recognize him.”

(And Joseph's brethren came) to Egypt: there were ten of them (and presented themselves before him) before Joseph, (and he knew them) Joseph knew that they were his brothers (but they knew him not) they did not know he was their brother.