Romans 10:10

Man believeth (pisteuetai). Impersonal construction, "it is believed" (present passive indicative of pisteuw). The order is reversed in this verse and the true order (faith, then confession). Confession is made (omologeitai). Impersonal construction again, "it is confessed," "man confesses." Both kardiai (heart) and stomati (mouth) are in the instrumental case.