'Boyhood' in the Bible

Now get up and restore the morale of your army. I swear by the LORD that if you don't get out there, you won't have a single man left in your army by nightfall! You'll be in more trouble today than all the disasters you've been through from your boyhood until now!"

And he replied to Him, “Teacher, I have [carefully] kept all these [commandments] since my youth.”