Cus I told him to! Har!!
See? People sometimes wonder why, if I created puny humans in my image, I don't have a sense of humor in the bible. You don't ever see me inspiring a prophet to tell a little joke or tell a funny limerick. When Jesus was around you never saw him cracking jokes. Why is religion os serious and lacking in fun? Well the answer is because all humor is from Satan. Yup its true. I can tell jokes though because you must do as I say but not as I do. So if you ever catch someone cracking a joke, do my job for me and slay him right there and then. Remember, religion is serious business! Althought I wouldn't mind it if next time someone prayed to me they told me a joke..but dangit then id have to kill them...
such is the dilema of being your Lord.