The Kalam Cosmological Argument

[Sheldon]

I find this argument laughable because it's supposed to be an argument for God but the conclusion is just that the universe has a cause.

All the first cause arguments only attempt to show a first cause. 

All of them make clear that additional information about that first cause, e.g. that it must be the God of the Bible, are not included in the argument, and must be argued through other means. 

That's just how such arguments work.

Whilst this was originally true, it certainty is not true of all of them. As others have explained, William Lane Craig, as one example, has included his deity in the argument. Very badly I grant you, but from what I've seen of his arguments he is a very poor philosopher, as a very strong bias skews and permeates all his reasoning.