In plain words
Let us move together in harmony, let us live together in harmony; the truth we have come to know, let us teach with understanding.
All must live together in harmony. Not only that. 'Together in harmony, without discord, let us live together,' it said. In this way, however much the Veda has taught the oneness in the many, those with some selfish aim and gain of their own go on thinking only of difference, and do not set their minds on oneness at all.
So we must recognise the special Dharma in the many holy days. In the belief that by destroying the wicked, by the death of the wicked, the world gained a measure of peace and security, we have celebrated as a festival even the day on which those wicked ones died: the day on which Narakāsura was slain. Narakāsura means the evil qualities in us; we must slay them today. The sixteen thousand Gopīs hidden in them are the good qualities. These good qualities, the Gopīs, we must dedicate to the Paramātma. Only under such protection must we nourish this principle. So this Naraka Caturdaśī is the day that taught this inner meaning. Because it is the day that let us taste this joy, we make the light grow, so that the whole world may be filled with light, blazing bright. We light lamps. The women in Narakāsura's prison had never seen light at all; after they were freed from bondage, that day they gazed at all the lights. They gazed at the lamps. They lit the lamps. So long as the evil quality called the demonic is in us, it is always dark for us. So we must drive away these evil forces. We must slay evil feelings. We must kindle the divine. We must fill ourselves with holiness. This Naraka Caturdaśī is the very day that gave this inner teaching. Out of joy and zest that we could attain this holy state, they have burnt sparklers of this kind. To mark the sound of the slaying, along with all the evil forces, they have let off the sound in crackers of this kind. Whenever they heard this sound, among these sixteen thousand Gopīs it was, 'Oh, Kṛṣṇa has cut off his head!', and so they rejoiced. All this sound they took as a reminder to us of the slaying of Narakāsura.
Whatever the qualities we live by, the nature of those qualities punishes us. It was because he tormented women that Narakāsura was tormented by a woman. Yadbhāvaṃ tadbhavati. That is why Kṛṣṇa did not enter in at all; He gave encouragement from the side.