Those who believe means all those believe, not some, HD.
It also does not mention that you have to be baptized to be saved
No but it makes it very clear that the ones who believe and are baptized shall be saved. It also makes it clear that those who are baptized but do not believe will not be. This of course flies in the face of all the other "salvational formulas" one finds all over the NT. Take your pick.
No, "those who believe" does not mean "all who believe". It means some. It would be like me saying "Those who smoke will get lung cancer." That doesn't mean I'm saying everyone who smokes is going to get lung cancer.
No but it makes it very clear that the ones who believe and are baptized shall be saved.
One who BELIEVE and is baptized SHALL be saved.
It also makes it clear that those who are baptized but do not believe will not be. This of course flies in the face of all the other "salvational formulas" one finds all over the NT.
You've changed the text. It doesn't say that those who are baptized but do not believe. Mark 16:16 states that those who do not believe will not be saved. That to is true. There are the people who believe (the elect) and the people who don't believe (the reprobates). This IS consistent with the "salvational formulas". What is clearly missing from the text is that you HAVE to be baptized in order to be saved.
Bear in mind that Calvinists do not subscribe to what is now the standard belief among most Protestants, that you must exercise your faith (take a leap of faith) in order to be saved. This is no more than Catholic doctrine which is a works oriented doctrine-you have to do something. It is God who brings us to repentance and gives us our faith.