Genesis 45:12

That it is my mouth that speaketh unto you - The Targum of Jonathan ben Uzziel renders the place thus: - "Your eyes see, and the eyes of my brother Benjamin, that it is my own mouth that speaketh with you, in the language of the house of the sanctuary." Undoubtedly Joseph laid considerable stress on his speaking with them in the Hebrew tongue, without the assistance of an interpreter, as in the case mentioned Genesis 42:23.

45:12 Your eyes see that it is my mouth - If they could recollect themselves, they might remember something of his features and speech, and be satisfied.
(2.) He is very earnest that his father and all his family should come to him to Egypt. Come down unto me, tarry not - He allots his dwelling in Goshen, that part of Egypt which lay towards Canaan, that they might be mindful of the country from which they were to come out. He promiseth to provide for him, I will nourish - Our Lord Jesus being, like Joseph, exalted to the highest honours and powers of the upper world, it is his will that all that are his should be with him where he is. This is his commandment, that we be with him now in faith and hope, and a heavenly conversation; and this is his promise, that we shall be for ever with him.