What to name the baby?

The boys have been coming up with names for the baby. When asked if they think it will be a boy or girl, we get "we don't know yet", but their names say it all! Luke thinks we should name the baby Sarah. He is pretty adamant about this one. James, on the other hand, is very diplomatic in his response and gives us several options to choose from. Here is how the conversation went:

 

Me: What should we name the baby?

James: Gordon. (what on earth!?!)

Luke: Sarah.

Me: James, why did you think of that name?

James: He is in Thomas the Tank Engine. (ok, now that makes sense)

Me: You know we picked names for both you boys from the Bible.

James: Ohhhhh. Well, then maybe we could name him Matthew or Mark (long pause) or even Acts! (notice how he skipped over Luke and John because we already have those in our family).

Luke: Sarah is in the Bible, my name is still good.

 

So what do you think, what should we name the baby?