Conversion: instant total commitment
The Bible is big on being fully committed.
According to the book of Revelation, being “lukewarm” (semi-committed) is worse than being “cold” (an atheist?) (Rev. 3:15-16).
Jesus commands, “Thou shalt love the Lord your God with all your heart, soul, mind and strength” (Luke 10:26).
And a distingishing feature of the gospel of Mark is the word “immediately.” Throughout that book, people interact with Jesus, begin believing in him on the spot and “immediately” start acting on their new beliefs. That sets a certain expectation for how a new believer should act.
Thus, from the moment of conversion, a believer tends to feel pressure to start acting and communicating as if nothing that conflicts with his new belief system could possibly be true. He is likely to see any other stance as a personal affront to his creator and redeemer. Better to offend all God’s creatures than to offend God himself.
Strangely, the new believer’s beliefs – the tenets he considers non-negotiable – are arbitrary. They are based much more on the culture in which he was converted than on the scriptures that were invoked to convert him. That’s why Baptists, Pentecostals, Lutherans, United Methodists and Presbyterians are so disparate in their treatment of current hot topics like abortion and homosexuality and in their positions on religious matters such as who may be ordained and the nature of the Holy Spirit (despite their recognizing the same scripture canon.) But that arbitrariness doesn’t seem to get in the way of a typical believer’s commitment to his belief system.