For I bear them (Israel) witness that they have a zeal for God, but not according to knowledge. For they being ignorant of God’s righteousness, and seeking to establish their own righteousness, have not submitted to the righteousness of God.
Paul’s argument was not against the Jews seeking righteousness, but of the way they tried to obtain it.
From eternity past God Himself designed the only way mankind could be saved would be through the atonement of Yeshua:
Yet it pleased the Lord to bruise Him;
He has put Him to grief.
When You make His soul an offering for sin,
He shall see His seed, He shall prolong His days,
And the pleasure of the Lord shall prosper in His hand.
He shall see the labor of His soul, and be satisfied.
By His knowledge My righteous Servant shall justify many,
For He shall bear their iniquities.
The atoning sacrifice of Yeshua, God the Son, satisfied God’s loving mercy to save the sinner, without violating His own righteousness.
PRAY ALL ISRAEL WILL BE SAVED.