John Benton makes comments about Sunday Schools here. One thing he says about his church is that:
We believe that all the Bible is necessary for our Christian maturity (2 Timothy 3.16,17). But is everything in Scripture appropriate for children? There are some horrifying things in the Bible. Is it really appropriate to preach to children from Genesis 19 or Judges 19 and 20? Do they need to hear about David being asked for a bride-price of 100 Philistine foreskins? I could go on.
My response to this comment is to say that Scripture does not operate a classification scheme. So there are no “18” or “PG” warnings in the text. We do not find a sub-heading to Song of Solomon that “this might not be suitable for younger ones”.
No doubt Scripture has to be preached sensitively and appropriately as to the people in the congregation in front of you. But it seems to me that there are no “no-go” areas in Scripture. As for my own children, I have always encouraged them to read all of scripture. And thereby, they learn of the horrors which sin brings into this world. We do not make the “gory” passages into Hollywood epics. But I do not see the justification for excluding the “gory” parts from the attention of younger ones.
We have to conclude in the end that God truly knows best. Speaking to Timothy, Paul says: All Scripture is God-breathed and is useful for teaching, rebuking, correcting and training in righteousness, so that the servant of God may be thoroughly equipped for every good work. (2 Tim. 3:16-17).
All scripture is for all people all the time and across all ages.