οτι 3754 CONJ εαν 1437 COND ομολογησης 3670 5661 V-AAS-2S εν 1722 PREP τω 3588 T-DSN στοματι 4750 N-DSN σου 4675 P-2GS κυριον 2962 N-ASM ιησουν 2424 N-ASM και 2532 CONJ πιστευσης 4100 5661 V-AAS-2S εν 1722 PREP τη 3588 T-DSF καρδια 2588 N-DSF σου 4675 P-2GS οτι 3754 CONJ ο 3588 T-NSM θεος 2316 N-NSM αυτον 846 P-ASM ηγειρεν 1453 5656 V-AAI-3S εκ 1537 PREP νεκρων 3498 A-GPM σωθηση 4982 5701 V-FPI-2S
Vincent's NT Word Studies
9. That (oti). So rendered as expressing the contents of the word of faith; but better because, giving a proof that the word is nigh. Confess and believe, correspond to mouth and heart.The Lord Jesus (kurion Ihsoun). Others, however, read to rJhma ejn tw stomati sou oti kuriov Ihsouv If thou shalt confess with thy mouth the word that Jesus is Lord. Rev., Jesus as Lord.
Robertson's NT Word Studies
10:9 {If thou shalt confess} (ean homologsis). Third class condition (ean and first aorist active subjunctive of homologew). {With thy mouth Jesus as Lord} (en twi stomati sou kurion iesoun). this is the reading of nearly all the MSS. But B 71 Clem of Alex. read to rema en twi stomati sou hoti kurios iesous (the word in thy mouth that Jesus is Lord). The idea is the same, the confession of Jesus as Lord as in #1Co 12:3; Php 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.