Some people are just overwhelmed. They bottle up their stress and emotions. When it becomes too much, they explode on the person closest to them. In this situation, try to speak as calmly as possible to the person without taking it personally. Try to show empathy. Conflict will only escalate the situation.
Yes, we have often heard Christians say in the Body of Christ, “God will not allow more on you than you can bear.” And of course we know that’s a lie because God does & will allow more on us than we can bear for His purpose.