In Malachi 3:16, what was written before the LORD about those who feared Him?

Answer: A scroll of remembrance

When those who feared the LORD spoke together, He listened, and a scroll (book) of remembrance was written before Him.

“At that time those who feared the LORD spoke with one another, and the LORD listened and heard them. So a scroll of remembrance was written before Him regarding those who feared the LORD and honored His name.”— Malachi 3:16 (BSB)