What's money to an infinite God?

"So do not worry, saying, ‘What shall we eat?’ or ‘What shall we drink?’ or ‘What shall we wear?’ For the pagans run after all these things, and your heavenly Father knows that you need them. But seek first his kingdom and his righteousness, and all these things will be given to you as well. Therefore do not worry about tomorrow, for tomorrow will worry about itself. Each day has enough trouble of its own."
Matthew 6:31-34

As simple and beautiful as this is, it's something that I constantly have to be reminded of. So often, I find myself resting on my own provision, or stressing over my lack thereof. Most recently, while searching for our plane tickets to Belize, Camden and I found that it was significantly cheaper to buy a round-trip ticket than it would be to get a one way. The solution seemed simple, just get the round trip ticket and don't show up for the return flight. The airlines probably count on that to a degree anyway, and besides, wouldn't it be my loss if I didn't use the ticket I payed for? Cam, however, had a very convicting rebuttal. It was something along the lines of, "If we are going because God has called us to go, then we need to be above reproach. If we are planning on flying there and not flying back, we need to be honest about it."
Honestly, I thought his statement was really frustrating, considering how little it would actually affect anyone and how much money we would save. But what he said after that struck me.
"What's $200 to an infinite God?"
Just think about that.
As if my extra money saved would do me any good whatsoever, compared to the unlimited resources of God. This had opened my eyes to what pride had blinded me of, and how freeing it is! I haven't worried about money since!
Little reminders like that sometimes hurt for a minute, but I'm so thankful to have friends that hold me accountable, even when it means stepping on my toes.

"Find rest, O my soul, in God alone;
my hope comes from him.
He alone is my rock and my salvation;
he is my fortress, I will not be shaken.
My salvation and my honor depend on God;
he is my mighty rock, my refuge.
Trust in him at all times, O people;
pour out your hearts to him,
for God is our refuge."
Psalm 62:5-8