Here are 2 Bible verses about wanting more from the Old and New Testaments of the Holy Bible (King James Version), sorted from most to least relevant.
Ecclesiastes 5:10-14 KJV
He that loveth silver shall not be satisfied with silver; nor he that loveth abundance with increase: this is also vanity. When goods increase, they are increased that eat them: and what good is there to the owners thereof, saving the beholding of them with their eyes? The sleep of a labouring man is sweet, whether he eat little or much: but the abundance of the rich will not suffer him to sleep. There is a sore evil which I have seen under the sun, namely, riches kept for the owners thereof to their hurt. But those riches perish by evil travail: and he begetteth a son, and there is nothing in his hand.
John 3:16-17 KJV
For God so loved the world, that he gave his only begotten Son, that whosoever believeth in him should not perish, but have everlasting life. For God sent not his Son into the world to condemn the world; but that the world through him might be saved.