Is it lawful to Kindle fire on the Sabbath ?
Depends. Depends on what the fire is used for...
This scripture gets pulled out of context and twisted so much, it is hard to recognize it at times, but let's read what it really says...
Exo 35:1 And Moses gathered all the congregation of the children of Israel together, and said unto them, These are the words which the LORD hath commanded, that ye should do them.
Exo 35:2
Six days shall work be done, but on the seventh day there shall be to you an holy day, a sabbath of rest to the LORD: whosoever doeth work therein shall be put to death.
Notice what verse 2 says, we are talking about work.
Exo 35:3 Ye shall kindle no fire throughout your habitations upon the sabbath day.
Now notice what comes immediately after...
Exo 35:4 And Moses spake unto all the congregation of the children of Israel, saying, This is the thing which the LORD commanded, saying,
Exo 35:5 Take ye from among you an offering unto the LORD: whosoever is of a willing heart, let him bring it, an offering of the LORD; gold, and silver, and brass,
Exo 35:6 And blue, and purple, and scarlet, and fine linen, and goats' hair,
Exo 35:7 And rams' skins dyed red, and badgers' skins, and shittim wood,
Exo 35:8 And oil for the light, and spices for anointing oil, and for the sweet incense,
Exo 35:9 And onyx stones, and stones to be set for the ephod, and for the breastplate.
For what? Why?
Exo 35:10 And every wise hearted among you shall come, and make all that the LORD hath commanded;
Exo 35:11 The tabernacle, his tent, and his covering, his taches, and his boards, his bars, his pillars, and his sockets,
The instruction here is about a communal fire to work on the Tabernacle. Doing that work were hired tradesman working at their occupation. God is showing here that working at your occupation, even for a noble cause, is not to be done on the Sabbath.