There are other documents which are still extant (or still in existence).[1] For example, the Ebla archive was found in northern Syria in the 1970s. It comprises the true stories about Abraham, Isaac, and Jacob (the forefathers or Patriarchs of Israel), as recorded in the book of Genesis (chapters 17-32). These accounts were written on clay tablets dating back to about 2300 B.C. – the time of the Patriarchs.
Furthermore, some archaeologists working in northern Israel found a stone tablet dating back to the ninth century B.C. It described Israel’s enemies and used phrases such as “king of Israel” and “house of David.” These accounts refer to King David (see 1 Samuel 20:26; 24:14; 26:20; 2 Samuel 3:1 and 6; 6:20; 1 Kings 12:19, 20, and 26; 13:2; 14:19; 15:9, 16, 17, 19, 25, and 31; 2 Kings 1:18; 3:1, 4, 5, and 9-13; 2 Kings 5:5-8; 6:9-12; 6:26; 7:6). There are numerous other archaeological findings which trace back to God’s Word, and there are new ones that are being discovered all the time (see https://cbn.org and search on “archaeology”).
[1] David B. Curtis, “Is the Bible Trustworthy?” last modified January 7, 2001, accessed January 11, 2022, https://www.bereanbiblechurch.org/transcripts/2timothy/is_bible_trust.htm.