And he smote the men of Bethshemesh, because they {k} had looked into the ark of the LORD, even he smote of the people fifty thousand and threescore and ten men: and the people lamented, because the LORD had smitten many of the people with a great slaughter.

(k) For it was not lawful for anyone either to touch or to see it, only to Aaron and his sons Nu 4:15,20.1 Samuel 6:19 Parallel Commentaries

Adam's Sin
Q-15: WHAT WAS THE SIN WHEREBY OUR FIRST PARENTS FELL FROM THE ESTATE WHEREIN THEY WERE CREATED? A: That sin was eating the forbidden fruit. 'She took of the fruit thereof, and did eat, and gave also to her husband.' Gen 3:3. Here is implied, 1. That our first parents fell from their estate of innocence. 2. The sin by which they fell, was eating the forbidden fruit. I. Our first parents fell from their glorious state of innocence. God made man upright, but they have sought out many inventions.' Eccl …
Thomas Watson—A Body of Divinity

Samuel
Alike from the literary and the historical point of view, the book[1] of Samuel stands midway between the book of Judges and the book of Kings. As we have already seen, the Deuteronomic book of Judges in all probability ran into Samuel and ended in ch. xii.; while the story of David, begun in Samuel, embraces the first two chapters of the first book of Kings. The book of Samuel is not very happily named, as much of it is devoted to Saul and the greater part to David; yet it is not altogether inappropriate, …
John Edgar McFadyen—Introduction to the Old Testament