In this passage, we once again see Paul's heart for Israel as he explains that their zeal and righteousness were misdirected. Instead, he points them to where their gaze ought to be, which is the person and work of Jesus Christ.
Paul's Heart (v1)
Paul desires for Israel to be saved
Israel's Misdirection (v2-3)
Israel's zeal is misdirected
Israel's righteousness is misdirected
Christ's Righteousness (v4)
Christ's righteousness is complete