John Chrysostom
And the Lord addressed me, saying, Defend your soul, O wayward Israel, more than the sinner of Judah. He commends the children of Israel, not for achieving righteousness, but for having sinned to a lesser extent in the past, and labels these as the most wretched for failing to improve despite this warning. Then He extensively warns Judah, highlighting that in light of the complete devastation of the kingdom of Israel, she did not revile the iniquity of her sister. The ten tribes warrant some form of excuse when compared to the tribe of Judah, as they continued to engage in the very actions that led to their calamity, having observed the suffering of their brethren. Thus, the prophet is instructed to proclaim a message to them as well.