There are lots of names from the Bible which have become so mainstream that lots of non-religious people probably don't know they're Biblical. Off the top of my head: John, Andrew, Peter, Matthew, Mark, Luke, Joseph, Jacob, Benjamin, Joshua, Adam, Joel, Timothy, Isaac, Caleb, Ethan, Nathan, Thomas, Gabriel, Daniel, David, Aaron, Noah, Reuben, Samuel, Elijah, Jonathan, Tobias, Zachary, Jude, Ezra. Moses is not one of those names in my mind, but who knows, maybe OP is a trendsetter and in ten years' time Moses will be in the top ten boys' names in the UK. Or maybe not.