1 Corinthians 4:7 "What do you have that you did not receive? If then you received it, why do you boast as if you did not receive it?

We understand that all we have is a blessing from God.

He has provided us with everything we need, and so much more, and we trust in Him that He will continue to provide.
In our thankfulness for His provision, we worship Him by giving back to Him what is rightly His in the first place. 

We give out of love and trust in God.