Hearing Silver's words everyone calmed down and frowned. If Alex can kill his son over this matter, there is no need for him to hold back against them. Right now they couldn't help but regret his final moments and wondered what to do next.
Back then the God sect was in the Baron realm, a whole realm above Alex. It was obvious he would die at their hands. With his death, the war would be lost! The only thing that would await them too was death.
They were not scared of death but for the sake of his child, they did what was necessary. They didn't want little Alex to live a life of fear, where he has to hide from the rest of the world all his life. This sacrifice they made was not for themselves but for little Alex.