Romans:10:9-10
rwp@Romans:10:9 @{If thou shalt confess} (\ean homologsis\). Third class condition (\ean\ and first aorist active subjunctive of \homologe\). {With thy mouth Jesus as Lord} (\en ti stomati sou Kurion Isoun\). This is the reading of nearly all the MSS. But B 71 Clem of Alex. read \to rma en ti stomati sou hoti Kurios Isous\ (the word in thy mouth that Jesus is Lord). The idea is the same, the confession of Jesus as Lord as in strkjv@1Corinthians:12:3; strkjv@Phillipians:2:11|. No Jew would do this who had not really trusted Christ, for \Kurios\ in the LXX is used of God. No Gentile would do it who had not ceased worshipping the emperor as \Kurios\. The word \Kurios\ was and is the touchstone of faith. {And shalt believe} (\kai pisteusis\). Same construction. Faith precedes confession, of course.
rwp@Romans:10:10 @{Man believeth} (\pisteuetai\). Impersonal construction, "it is believed" (present passive indicative of \pisteu\). The order is reversed in this verse and the true order (faith, then confession). {Confession is made} (\homologeitai\). Impersonal construction again, "it is confessed," "man confesses." Both \kardii\ (heart) and \stomati\ (mouth) are in the instrumental case.