From Vatican News:
Jesus calls everyone “to enter through the narrow gate,” showing that it is not a question of numbers, but of “going through the right passage, which is there for everyone.” Pope Francis explained that “Jesus does not want to deceive us” with promises of “a beautiful highway, and at the end a wide door.” Rather, the passage is narrow, in the sense of demanding. In order to be saved, the Pope said, we must love God and our neighbour – and this is not “comfortable.” It is demanding, and requires us to “strive,” which the Pope said means having a “decisive and persevering will to live according to the Gospel.
Recalling the parable Jesus tells in the Gospel, of those left outside when the master of the house closes and locks the door, Pope Francis said that the Lord will not recognize us on account of our titles, but only on account of “a humble life, a good life, a life of faith that results in works.”