Correction: whatever you did as a "zealot" you stopped doing when you met Jesus became a fulltime apostle. Not every Christian is called to full time ministry, and it's a good thing, too - where would tithes come from if nobody had secular jobs?
For those NOT called to fulltime ministry, political activism ("zealotry", lawfully expressed), fishing, the arts, carpentry, and all other honest lines of business and cultural engagement are lawful for Christians, and the political realm arguably needs more Christian influence than any other.
I have a secular job.