The know-how and creativity to keep warm in cold spells when utilities are not available will increase ability to cope.
One or more of the Great Tribulation events will include bitter cold for a number of days.

Our Lord has advised us through various seers to have blankets for warmth.
To the Lord’s request, one can add other items that can serve that purpose: warm coat, sweaters, fleeces, mitts, socks, cold-weather footwear and sleeping bags. Clothes that breathe are better at keeping one warm. They wick the water and perspiration away from your skin. Think of dressing in layers.
A source for blankets, fabrics and clothing to keep warm can be a local thrift shop.

Keeping warm with fire
If keeping warm with firewood is a viable option for where you live and if you have never made a fire before, now is time to practice. Have a fire pit at a safe distance from your dwelling. Practice making fires before it becomes a necessity.

To start a fire:
- tinder: some dry grass or torn newspaper crumbled up. - a match or lighter or lit candle... - kindling: some twigs or thin pieces of firewood, wood less than 2" in diameter. - optional [if you are a novice or struggling to start a fire for whatever reason, you can use a "fire starter". There are typically little cubes of wax. Good for windy days or for newbies. Place a firestarter on top of paper.

To light a fire:
- place tinder,( then fire starter, ) then kindling. Criss cross the kindling : 3 or 4 pieces left-right then 3 or 4 pieces straight ahead - light tinder - once kindling starts burning, add more kindling or bigger firewood [kindling then logs] to keep fire going. With a rocket stove, you will only need kindling. - for fire pits, and wood stoves, you'll add logs [3" or more in diameter] to keep the fire going for longer duration.

Remember, fire needs air! Without air flow, the best and driest firewood will struggle to burn well. To help in this regard, place a grate or some a few bricks in bottom of fire pit so tinder and kindling has air flowing under it to help fire burn. Burn dry wood. Wet wood throws very little heat and causes plenty of creosote.

If your only source of heat is outdoors and you want to bring some of that warmth indoors, consider something like the following: heat some rocks in the firepit. Once hot, place rocks in a steel pail. Cover with a lid. Bring pail with hot rocks indoors and place the pail on non-flammable surface like tiles or bricks. The heat from the rocks and pail will help cut the chill. Anyone can improvise on this but make sure what you use will not start a fire indoors.

Keeping warm without electricity
It is easier and more effective to warm a small space than a whole house. Warming up a large space can consume a lot of your fuel in little time. Consider warming a smaller area than a whole house in an effort to conserve resources like heating oil, firewood, fuel, etc. Seal off sections of the house with blankets or tarps to lower number of rooms to heat. Should it not be possible to use a heat-generating appliance, bundle up in a small space [closet, small windowless room, etc.] and use body heat to warm the space. Each human generates about 75 to 100 watts of energy when at rest.

There are multiple resources on YouTube for building fires or building passive energy heaters.

Steel can solar heater:
A solar heater using cans
Another solar heater using cans

Book of Truth prophecy:
Start planning your food stockpiles, blankets, candles and water now if you want to avoid receiving the mark, the mark of the beast.”1
*–April 17, 2011.

Buy gas stoves, blankets, dried and tinned food, water purification tablets and candles, along with religious images to sustain you and your families during the Great Chastisement, which will follow the Warning.2
– July 8, 2011