Commentaries
26:1-6 God's ambassadors must not seek to please men, or to save themselves from harm. See how God waits to be gracious. If they persisted in disobedience, it would ruin their city and temple. Can any thing else be expected? Those who will not be subject to the commands of God, make themselves subject to the curse of God.
3. if so be—expressed according to human conceptions; not as if God did not foreknow all contingencies, but to mark the obstinacy of the people and the difficulty of healing them; and to show His own goodness in making the offer which left them without excuse [Calvin].