In the past, Jesus' appearance upset Judaism. 2,500 years ago, Sakyamuni's appearance shook Brahmanism. It seems that man can never learn positive lessons from history. Instead, people always learn from negative lessons for the sake of their own interests. There is the law of formation, settlement, and deterioration in the universe.
Nothing is constant without change.
There are Buddhas coming to this world to save people in different historical periods. History develops in this way. Future mankind will also hear of Buddha Fa.