There is some disagreement over whether Isaiah 50:1–11 is a unit distinct from or linked with Isaiah 49:14–26.
Those who see Isaiah 50:1–11 as its own unit note that the addressee changes in Isaiah 50:1. Previously, in Isaiah 49:14–26, it is the mother who is addressed; now it seems to be the children who are being addressed. On the other hand, and more likely, there is a link between the two chapters, particularly Isaiah 50:1–3. These first three verses appear to bring the thought of Isaiah 49:14–26 to a close, pleading that Zion’s children reorient their thinking in relation to their complaint of Isaiah 49:14 that the Lord had forsaken them. The Lord impresses upon them that it was their sins that led to their exile, and yet they may be comforted to know he has not disowned them, but is able and willing to save them from their sin.1 Looking forward, Isaiah 50:1–3 can serve as only a very general introduction to Isaiah 50:4–11, which includes a soliloquy by the Servant regarding his obedience and his hope (Isaiah 50:4–9) and a call for obedience to the Servant by all who trust in the Lord (Isaiah 50:10–11).
1 Thus says the LORD: “Where is your mother’s certificate of divorce, with which I sent her away? Or which of my creditors is it to whom I have sold you? Behold, for your iniquities you were sold, and for your transgressions your mother was sent away.