Answer:
god is judging us based on the good we do
Explanation:
st. john is saying that when we die, god is going to judge us based on the good and charitable things we did with our earthly life. "at the end of our life" would mean when we pass away and go to be judged by god. this is st. john basically explaining that when we go into the next form of life, we will be judged on wether we used our life for good or not. think about it as if people are judging you, if you spent your whole life stepping on other people to become successful, people will judge you as someone who doesn't care about others. people will see you as being apathetic and selfish. on the other hand, if you dedicated your whole life to helping others and never putting yourself first, you will be judged as empathetic and giving, people will see you as selfless and worthy. this is the same as how st. john is saying we are judged, we will be judged on how we spent our lives.