It IS the word of God.......written by man. Man is fallible, God is not. Again, God is smart enough to have had the Bible written for the people of the time” to understand. God has no limitations. A “serious error”?..........you are not my judge, God is.
Excuse me, but the Bible was written for men OF ALL TIMES.
And yes, you are in serious error when you say that God’s Word is error prone because he inspired men to write it.