Romans 10:9
That if thou shalt confess with thy mouth the Lord Jesus, and shalt believe in thine heart that God hath raised him from the dead, thou shalt be saved.
KJV

Comments:

The word "if" is used in language to introduce a conditional clause. The form of "if" is: if (logical condition), [then] (conclusion). "Then" may be used explicitly or implied. The conclusion follows if and only if the logical condition is TRUE. Further, two or more logical conditions may be conjoined with AND, OR, or XOR (exclusive OR). In Romans 10:9, we have two logical conditions, confession and belief, conjoined with AND. That means both must be TRUE for the conclusion to follow. What is the conclusion? To be saved. One must both confess Christ AND believe to be saved. That is how the language here works.

Those of the salvation by faith only persuasion will claim that justification precedes works of any kind, however the presence of the conditional clause in this verse proves just the opposite.  Confession of Jesus by mouth is a work of righteousness that is part of the God's plan for man's redemption.

Jesus teaching on confession supports this completely:

Matthew 10:32-33
32 Whosoever therefore shall confess me before men, him will I confess also before my Father which is in heaven.
33 But whosoever shall deny me before men, him will I also deny before my Father which is in heaven.

Luke 12:8-9
8 Also I say unto you, Whosoever shall confess me before men, him shall the Son of man also confess before the angels of God:
9 But he that denieth me before men shall be denied before the angels of God.

Anyone saying that one does not have to either confess or believe to be saved is contradicting Jesus Christ and Paul, an inspired writer.

Romans 8:29

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