(Rev. 13:10) “10 … If anyone is with the sword, he must be killed. Here is the endurance and the faith of the saints.”
Saints were created by God who has given them faith with a particular purpose. This purpose is to keep peace in the heavens. Saints are created to keep one particular principle: “If anyone is with the sword, he must be killed” that is to stop any war. This is a simple principle, but keeping it is a hard task splitting into many different areas of service of saints. The word “endurance” in Rev. 13:10 signifies that one needs endurance to endure over many different facets of war and keep peace in all situations.
(Gal. 4:26) “But the Jerusalem that is above is free, which is the mother of us all.” This is about a city in heaven. The word Jerusalem translates as “a city of peace”. This is a capital city in heaven whose purpose is to keep peace in heaven. It is our mother because we were created after its task (to keep peace).
The Jerusalem on the Earth was also created with the same purpose to keep peace, but as we see now, it has not yet reached its service, it is its future service to keep peace.