Isaiah 50:1

Those who have professed to be the people of God, and yet seem to be dealt severely with, are apt to complain of God, and to lay the fault upon him, as if he had been hard with them. But, in answer to their murmurings, we have here, I. A challenge given them to prove, or produce any evidence, that the quarrel began on God's side, Isa 50:1. They could not say that he had done them any wrong or had acted arbitrarily. 1. He had been a husband to them; and husbands were then allowed a power to put away their wives upon any little disgust: if their wives found not favour in their eyes, they made nothing of giving them a bill of divorce, Deu 24:1; Mat 19:7. But they could not say that God had dealt so with them. It is true they were now separated from him, and had abode many days without ephod, altar, or sacrifice; but whose fault was that? They could not say that God had given their mother a bill of divorce; let them produce it if they can, for a bill of divorce was given into the hand of her that was divorced. 2. He had been a father to them; and fathers had then a power to sell their children for slaves to their creditors, in satisfaction for the debts they were not otherwise able to pay.

— Matthew Henry's Concise Commentary (public domain)