I read recently that most evangelical pastors believe that tithing is not required for NT believers. It seems that we have become a people of strange fire. We like to design our worship to satisfy ourselves. But God's standard never changes. Cain and Able brought offerings (long before the Law) as a way to honor God. Worship always involves giving... even if that makes your flesh uncomfortable. The tenth (1/10 or 10% or tithe) has fallen out of fashion with American Christians. Why am I not surprised? Jesus warned us that we cannot serve both God and money!
We must ask ourselves the following questions if we are serious about being Christ followers and true worshippers in this world that we live in.
What standard of giving did God promise to bless in the Mal 3.10?
Does my 'self designed' giving pattern "exceed the righteousness of the pharisees"? (Matt. 5.20)
Do I give cheerfully? Generously? Weekly? Do I excel in the grace of giving? or am I cheap and selfish? (2Cor 8-9)
Do I recognize that my blessings are tied to my giving? (2Cor 9.6-12)
Perhaps instead of "designer worship" we should be worshiping in accordance with the Designer!