Endurance and survival instructions for believers going through tribulation, especially mass tribulation, not just individual.

Rev 12v11 And they overcame him by the blood of the Lamb, and by the word of their testimony; and they loved not their lives unto the death.

Fasting.
Immediately they take you and do not kill or torture you, start fasting, if they deny you water, get a dry hard object and suck it to keep your saliva and other glands functioning, this should allow you to last longer than the standard without water which is three days.
(meaning you are at least getting water)If in a group the strongest should help the weakest through the initial periods of weakness in fasting generally first 3-7 days, once past that weakness(rest often as you can into strength phases as your body adjust to no solid food intake, the average person given water can readily do a 40 day fast before it becomes starvation and physically destructive to the body, breaking fast is extremely important, for the period that you fasted, is the period again you should refrain from meat/s, this is not hard and fast, but the first 3-7 days should be a liquid diet only, starting with watered down orangejuice if possible first day, and after 2nd-3rd watery vegetable soups, and after that some milk product to reintroduce full beneficial gastrointestinal flora for full food consumption of solidfood)


Once the individual or group gets to the strength phase , you will be ok physically for many weeks, even able to work hard if forced to, the important thing though is to be in prayer continually, and remembering scripture and helping others memorize what ever is verbally available to do so by this manner.
For now we must deal with torture, if they torture you immediately, and other believers know, they should be in prayer and on their knees regularly for whoever is being tortured, if it is only you, you must call upon the Lord and the name of the Lord(YAHshua/Jesus/Jesu etc) aloud( and internally) if not physically verbally restrained, YAH/God(as in HalleuYAH) will supply the necessary grace, to endure to the end, if that means physical death so be it, but the testimonies on this subject are amazing, wonderful, powerful, and continual down the ages, of those who survived and still loved and gloried God afterward as witness and testimony)


If possible in fasting phase, and for the sick, anoint with oil, any will do if oilve is not available, and if no oil is available, bless water, and if no water is available , use and bless your saliva, the anointing, being the Holy Spirit in the main, breaks the yoke amongst many other wonderful things. And fasting will also allow casting out of the worst spirits.

Concentration camp issues.
For those already in the camp following the above, remember, new loads of terrorized individuals into the camp will be distressed, sick, unhappy etc etc, so if you are able to receive rations, keep on taking them, and give them to those in need, this will serve 2 purposes, help the infirm into fasting, and prevent for as long as possible force feeding(if they(whoever is control of the camp) deem to use that method)

To other believer , [please feel free to share this and add to it useful further scriptures and info, far and wide, for the time/s are nearer than when we first believed, Praise Him, for He comes soon, Thank You Father.