Not that I am speaking of being in need, for I have learned in whatever situation I am to be content. I know how to be brought low, and I know how to abound. In any and every circumstance, I have learned the secret of facing plenty and hunger, abundance and need. I can do all things through him who strengthens me. …And my God will supply every need of yours according to his riches in glory in Christ Jesus.
— Philippians 4:11–13, 19

Giving is, among other things, an exercise in turning loose of what we have in our little “kingdom” to enter into the amazing reciprocity that God has built into the human heart. “…give, and it will be given to you. Good measure, pressed down, shaken together, running over, will be put into your lap. For with the measure you use it will be measured back to you.” (Luke 6:38) Not that it “will be given” to you - others around you will give to you. Generosity is what people are made for. They would love to be generous - if only they thought they could. Of course, they will rarely know they actually can unless they are experiencing life in the kingdom of God. Generosity is one essential dimension of love, and there is ample provision for it. Start being generous with what you have and it will grow. Prayer and giving are the first two concrete ways of venturing on the kingdom of God and finding it a reality.
— Dallas Willard Knowing Christ Today