The story of the Burning House is a way of retelling the important teaching of the Buddha of this single Buddha way which sets aside various other paths which before were seen as unique. The Buddha wishes for all people to leave the life of suffering and attain enlightenment equal to that of all Buddhas. That is the one great purpose for the appearance of any Buddha in any realm of any time. The Buddha, being a skillful teacher, realized at the beginning that people would not be able to grasp the very complex teaching of enlightenment equal to that of all Buddhas. He also realized people would doubt they had such a capacity. Even today, many people still cling to the notion they are not good enough, or they are not worthy of attaining such an indestructible life of true joy and cessation of suffering.
Lecture on the Lotus Sutra