God gives everything

"Nor is [God] he in need of anything, that he should be served by human hands; on the contrary, it is he who gives everything – including life and breath to everyone." (Acts 17:25)    

All blessings come from our God. All life, all breath come from God. God gives to everyone whatever he has. All talent, time and treasure come from God.

"Blessed are you, Lord God of all creation. Through your goodness, we have this bread to offer, the fruit of the earth and the work of human hands. It shall become for us the bread of life." We answer this offertory prayer with the affirmation – "Blessed be God forever." So, even the gifts we bring to God are provided to us by God Himself.