So I've been trying to figure out when the Hebrew Bible was attested. I've done a little reading and it appears that there is a difference morphologically between Archaic Hebrew, Biblical Hebrew, Dead Sea Scroll Hebrew, and Late Hebrew. I get that there are non-biblical fragments that were written in Archaic Hebrew. But what I don't get is what are our sources for Biblical Hebrew. Is it the Samaritan Bible or the Masoretic Bible? Was there one text (e.g. Dead Sea Scrolls, Samaritan Bible, Masoretic Bible) that was written in 2 different forms of Hebrew, Biblical Hebrew and Late Hebrew?