Could Moses Write Hebrew?

As you may have noticed, on a number of occasions I get asked questions that I simply can’t answer.   I received one such question this week, about the history of the Hebrew language.  Here is how the questioner phrased it:

What is our earliest evidence for Hebrew as a written language? I’ve been to apologetic seminars where they say it’s long been said by atheists that the Hebrew Bible can’t be trusted because the Hebrews didn’t have a written language until well after the stories in the OT...