There are hundreds of translations of the Dhammapada. My edition is based on the translation by Narada Mahathera. Many of the verses are impossible to understand without the context that is given by the Commentary. The Dhammapada Commentary is a lengthy work with stories for each verse, or each group of verses. Many stories include accounts of previous lives, which the Buddha gave to help the monks understand why certain events had occurred. For example, when the blind Arahant Cakkhupala was practising walking meditation, his feet crushed many insects that had come out of the earth due to the rain. They wondered whether he was truly an Arahant if he killed so many living-beings, and also why he had gone blind after striving hard to fulfil the Ascetic Practice of never lying down to sleep, even when advised to do so by his physician who prescribed eye-drops for an eye-disease. The Buddha reassured the monks that he was, indeed, an Arahant, and was destined to go blind sooner or later due to an unwholesome kamma he had done in a previous life.