One can declare the teaching/preaching of TULIP began with Jesus and the Apostles. But let's all be honest and face the fact that it is called Calvinism for a reason. Need that be explained? So what has this push, beginning with John Calvin, served to do among the brethren? Has it united us? The answer is that it has not united us, on the contrary, it has caused division from the very time Calvin began to preach it. Now if the Calvinist and Non-Cal agrees that a belief or non-belief in TULIP has nothing to do with a person's salvation or sanctification, and we can see the division it causes, then why promote the theology at all? Then we could all focus our precious God given time on evangelism and discipleship. Letting the mysterious details up to God.