Jesus said:
📖 “By this all will know that you are my disciples—if you have love among yourselves” (John 13:35). Love is the identifying mark of true Christians. It is not abstract — it is visible in action.

This was vividly demonstrated during the dark years of the Nazi concentration camps. Jehovah’s Witnesses were not imprisoned because of crime, but because of their faith. They were offered release if they signed a paper renouncing their beliefs — yet almost all refused. Despite torture, hunger, and deprivation, they proved their loyalty to Jehovah and to one another.

Their love showed in practical ways. When one Witness became weak, others shared their meager food rations. When medical care was denied, they nursed one another with tenderness. They even continued their ministry: smuggling Bible texts into the camps, secretly duplicating copies, and preaching so zealously that fellow prisoners remarked, “Wherever you go, all you hear is talk about Jehovah!” Their unbreakable love for God and for one another shone like a beacon of hope amid the cruelty.

True Christians today are identified in the same way — not by labels or titles, but by self-sacrificing love that endures even in trials.

– LINK