Romans 10:3

They being ignorant of God's righteousness: here he shows more particularly what knowledge the Jews wanted. They knew not the righteousness of God; of which see Romans 1:17, with the notes there. This was abundantly manifested, being witnessed by the law and the prophets, Romans 3:21; and a thing very needful to be known, as being that wherein man's happiness consisted; but they were ignorant of it. Going about to establish their own righteousness; their personal and inherent righteousness, a home-made righteousness, which is of their own spinning; this they designed to set up in the room of God's righteousness. Have not submitted themselves to the righteousness of God; this notes the pride that accompanied their ignorance, and that is in the hearts of men by nature. They will not go abroad for that which they think they have, or may have, at home. They will not be beholden to another for that which they suppose they have in themselves. They have righteousness enough of their own working; and therefore they reject and withdraw themselves from that which is of God's appointing.