Please click on the title or here to get into this link which contains the manifold wisdom on giving.
It reminds me of Ephesians 3:10-11
10His intent was that now, through the church, the manifold wisdom of God should be made known to the rulers and authorities in the heavenly realms, 11according to his eternal purpose which he accomplished in Christ Jesus our Lord.
We are the church and hence we are exhorted to express the manifold wisdom in all aspects of our life, including giving. Rejoice.