John Wesley on Psalms 15:4

Vile - An ungodly man. Honoureth - He highly esteems and loves them, though they be mean as to their worldly condition, and though they may differ from him in some opinions or practices of lesser moment. Sweareth - A promissory oath. Hurt - To his own damage. As if a man solemnly swear, that he will sell him such an estate at a price below the full worth; or that, he will give a poor man such a sum of money, which afterwards he finds inconvenient to him. Changeth not - His purpose, but continues firm and resolved to perform his promise.