"And the pride of Israel shall answer in his face: and Israel and Ephraim shall fall in their iniquity: Juda shall also fall with them." LXX: "And the injury of Israel will be humbled before him: and Israel and Ephraim will be weakened in their iniquities, and Judah will also be weakened with them." The word "Gaon" is interpreted by Septuagint and Symmachus as "injury," by Aquila and Theodotion as "pride." Therefore, whatever Israel did, whether acting arrogantly against the Lord or worshipping idols to injure the Creator, will be answered in its face so that it may not go unpunished, but rather its humiliation will be humbled, and both people and kings will fall or weaken in their injustice, so that those who were strong in wickedness are forced to return to the Lord in weakness. And this will not only happen to Israel and Ephraim, that is, the ten tribes and their kings, so that they will be led into captivity; but Judah also, that is, the two tribes which ruled in Jerusalem, will follow the footsteps of the captives, that as they imitated the crime, they may imitate the punishment. Heretics have the mother of their iniquity in their pride, while they boast that they always know more, and rage against the Church. But their pride will weaken, and the people and teachers will equally fall: even Judah, who appears to be in the house of God, and in the Church, dwells not in mind but in body: and he has the same opinion in error with heretics; he is useless in promising the ecclesiastical name, because he also must be punished with the heretics. We rush towards what is clear, so that we may linger in the more obscure.
Source: Commentary on Hosea 5:5