Romans 10:3

“For they being ignorant of God's righteousness, etc..] Either of the righteousness of God revealed in the Gospel, which is no other than the righteousness of Christ, and which they knew nothing of, the whole Gospel being a sealed book, and wholly hidden from them; or of the righteousness of God required in the law, they imagining that only an external conformity to the commands of the law, was all that was necessary to attain to a justifying righteousness by it, not knowing the spirituality of it, and that it required conformity of heart and nature, as well as life and conversation; or rather of the attribute of God's righteousness, the strictness of his justice, the purity and holiness of…”

“For they being ignorant of God's righteousness--that is, for the justification of the guilty (see on Rom 1:17). and going about--"seeking" to establish their own righteousness, have not submitted themselves to the righteousness of God--The apostle views the general rejection of Christ by the nation as one act.”

“For they being ignorant - The ignorance of the Jews was voluntarily, and therefore criminal. The apostle does not affirm that they could not have known what the plan of God was; for he says Romans 10:18-21 that they had full opportunity of knowing. An attentive study of their own Scriptures would have led them to the true knowledge of the Messiah and his righteousness; see John 5:39; compare Isaiah 53:1-12, etc. Yet the fact that they were ignorant, though not an excuse, is introduced here, doubtless, as a mild and mitigating circumstance, that should take off the severity of what he might appear to them to be saying; 1 Timothy 1:13, “But I obtained mercy because I did it ignorantly, in…”

“For they being ignorant of the righteousness of God - Of the method God has established for the justification of a sinner. And seeking to establish their own righteousness - Their own method of acceptance with God. Have not submitted to the righteousness of God - The way of justification which he hath fixed. Romans 10:4”

“10:3 God’s way of making people right with himself: See 1:17; 3:21-26. Paul uses this phrase to explain Israel’s failure in terms basic to the gospel. God manifested his righteousness through the ministry of Christ, but most Jews did not understand it, partly because they were so focused on the law as a way of securing their own righteousness.”

“God's righteousness: "God's method of justification," says Abp. Newcome: God's method of saving sinners. Rom 1:17, Rom 3:22, Rom 3:26, Rom 5:19, Rom 9:30; Psa 71:15, Psa 71:16, Psa 71:19; Isa 51:6, Isa 51:8, Isa 56:1; Jer 23:5, Jer 23:6; Dan 9:24; Joh 16:9, Joh 16:10; Co2 5:21; Pe2 1:1 to establish: Rom 9:31, Rom 9:32; Isa 57:12, Isa 64:6; Luk 10:29, Luk 16:15, Luk 18:9-12; Gal 5:3, Gal 5:4; Phi 3:9; Rev 3:17, Rev 3:18 submitted: Lev 26:41; Neh 9:33; Job 33:27; Lam 3:22; Dan 9:6-9; Luk 15:17-21 Romans 10:4”