And, behold, your eyes see, and the eyes of my brother Benjamin, that it is {d} my mouth that speaketh unto you.

(d) That is, that I speak in your own language and have no interpreter.

Wesley's Notes

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.

Matthew Henry's Concise Commentary

45:1-15 Joseph let Judah go on, and heard all he had to say. He found his brethren humbled for their sins, mindful of himself, for Judah had mentioned him twice in his speech, respectful to their father, and very tender of their brother Benjamin. Now they were ripe for the comfort he designed, by making himself known. Joseph ordered all his attendants to withdraw. Thus Christ makes himself and his loving-kindness known to his people, out of the sight and hearing of the world. Joseph shed tears of tenderness and strong affection, and with these threw off that austerity with which he had hitherto behaved toward his brethren. This represents the Divine compassion toward returning penitents. I am Joseph, your brother. This would humble them yet more for their sin in selling him, but would encourage them to hope for kind treatment. Thus, when Christ would convince Paul, he said, I am Jesus; and when he would comfort his disciples, he said, It is I, be not afraid. When Christ manifests himself to his people, he encourages them to draw near to him with a true heart. Joseph does so, and shows them, that whatever they thought to do against him, God had brought good out of it. Sinners must grieve and be angry with themselves for their sins, though God brings good out of it, for that is no thanks to them. The agreement between all this, and the case of a sinner, on Christ's manifesting himself to his soul, is very striking. He does not, on this account, think sin a less, but a greater evil; and yet he is so armed against despair, as even to rejoice in what God hath wrought, while he trembles in thinking of the dangers and destruction from which he has escaped. Joseph promises to take care of his father and all the family. It is the duty of children, if the necessity of their parents at any time require it, to support and supply them to the utmost of their ability; this is showing piety at home, 1Ti 5:4. After Joseph had embraced Benjamin, he caressed them all, and then his brethren talked with him freely of all the affairs of their father's house. After the tokens of true reconciliation with the Lord Jesus, sweet communion with him follows.