John Owen: Greatest Motivation for a Life of Purity

I am still reading John Owen's essay, "Of the Mortification of Sin in Believers." The following quote loses a bit of impact from being out of context, but it is still good.

Consider who and what you are; who the Spirit is that is grieved, what he has done for you, what he comes to your soul about, what he has already done in you; and be ashamed. Among those who walk with God, there is no greater motive and incentive unto universal holiness, and the preserving of their hearts and spirits in all purity and cleanness, than this, that the blessed Spirit, who has undertaken to dwell in them, is continually considering what they give entertainment in their hearts unto, and rejoices when his temple is kept undefiled. (p. 102, Overcoming Sin and Temptation)