I believe it is important to plan out expenditures because they involve money and you need to do a lot of financial planning for anything involving money being spent.
Explanation:
In the Epic of Gilgamesh, Lord Shamash urges Gilgamesh to attack Humbaba because Shamash strongly feels that Gilgamesh possesses the ability to defeat Humbaba in battle. Lord Shamash, in turn, plays upon Gilgamesh's ego in order to force him into killing his arch enemy.