What do you think of Robert Morris' book "The Blessed Life" and his notion that we should give God all the first fruits and mammon is a spirit, not money? [Genesis 4:3, Proverbs 3:9, 1 John 3:17-18, Colossians 3:4, Philippians 1:21, 1 Corinthians 6:20, Malachi 3:8-12, Luke 14:33].