Then please explain what is meant by Romans 10:10
for with the heart man believeth unto righteousness; and with the mouth confession is made unto salvation
Hmmmmm. Nothing in there about baptism. Nothing in there about Sabbaths. Nothing in there about anything other than believing in your heart and cofessing (or acknowledging) with your mouth and then you SHALL be saved.
But since you only speak what comes out of your heart, the movement of your lips is not what saves you, but it is evidence that you have been saved. In both verses it is belief which is the trigger for salvation. Confession is the evidence that the trigger has been pulled.