Let's read this scripture in context to get a better understanding of what verse 14 of Eph 2 is really saying. Eph 2:11-19,"Therefore remember that at one time you Gentiles in the flesh, called “the uncircumcision” by what is called the circumcision, which is made in the flesh by hands— remember that you were at that time separated from Christ, alienated from the commonwealth of Israel and strangers to the covenants of promise, having no hope and without God in the world. But now in Christ Jesus you who once were far off have been brought near by the blood of Christ. For he himself is our peace, who has made us both one and has broken down in his flesh the dividing wall of hostility by abolishing the law of commandments expressed in ordinances, that he might create in himself one new man in place of the two, so making peace, and might reconcile us both to God in one body through the cross, thereby killing the hostility. And he came and preached peace to you who were far off and peace to those who were near. For through him we both have access in one Spirit to the Father. So then you are no longer strangers and aliens, but you are fellow citizens with the saints and members of the household of God." I am very familiar with Ephesians 2, and its often misinterpreted because of the lack of understanding of Hebrew culture and thought, and historical background. The question a good bible student must ask him/her self is,"What is the hostility wall that is put up?"Samuel, in ancient times, there was much hostility between Hebrew and Greek. Many commandments were created just for Hebrews in staying away from Gentile peoples. There is no teaching in the Torah that separates a Hebrew from a Gentile, especially if that Gentile is coming to faith. Yeshua did not come and abolish the Torah, for He stated in Matt 5:17-19 that He came not to abolish the Torah, but to DO AND PERFORM the law(fulfill).
Well there is not tradition here... starting a car IS lighting a fire. That's how a car works.
Haven't you guys ever gone camping??? If you have, you know that KINDLING a fire is a heck of a lot more laborious than starting a car. Starting a working modern car is no work at all, no worse than turning a doorknob, kindling a fire is a ton of work, especially if there be any hint of dampness. Any of you who use electricity on Shabbat are using a fire, but it is NOT a kindled fire, it is a perpetually burning fire at the coal based power plant, nobody there is kindling a fire, they are only STOKING it. The coal fire heats steam and the steam drives the turbines turning the generators and that produces the "fire" of electricity. So you are powering your phones and computers by fire albeit indirectly. There is no prohibition against stoking a fire on Shabbat, only a prohibition against kindling a fire. (Athough someone getting paid for stoking a fire on Shabbat is in violation for getting paid for it-- unless on salary, but who if any of you shuts off the main circuit breaker at dark on friday evening?) An electrical spark is an element of fire, ancient cultures viewed electrical phenomenon as a type of fire. When you start a car or have an electronic ignition gas stove, that is simply transferring one "fire" to ignite another, but it is NOT kindling. If anyone wants to condemn anyone for turning on a gas stove (to heat up something), then to be logically consistent, that person must also condemn him/herself for using electricity that comes from the power plant generated by the generator, turned by the turbines, moved by the steam, heated by coal fire, stoked by the coal technician-- all based on the erroneous assumption that stoke=kindle.
If you really want to split hairs on it, the argument could be made that a gas stove with a pilot light instead of a electronic ignition is more righteous, because it does not need any of the electrical "fire" from the power plant, and it does not start a fire, but only increases (or stokes) the already burning fire of the pilot ligh. But hey,regardless if it's electronic or piloted, it's the same amount of non-work as turning on your computer.