Charles H. Spurgeon on Psalms 62:10

Become not vain in robbery. What? would he have them serious in robbery? No; the meaning is this: do not trust in a thing of nought; if you rob, oppress, deceive, or wrong others, you trust in a vain thing —in a thing that is not —in a thing that will never do you good: there will be no tack, no hold in anything got in such a manner. When you think to get riches by wrong dealing, or closely circumventing others, you become vain in robbery. Joseph Caryl.