Adam Clarke on Romans 10:3

For - being ignorant of God's righteousness - Not knowing God's method of saving sinners, which is the only proper and efficient method: and going about to establish their own righteousness - seeking to procure their salvation by means of their own contriving; they have not submitted - they have not bowed to the determinations of the Most High, relative to his mode of saving mankind, viz. through faith in Jesus Christ, as the only available sacrifice for sin - the end to which the law pointed.