John Wesley on Romans 8:19

For the earnest expectation - The word denotes a lively hope of something drawing near, and a vehement longing after it. Of the creation - Of all visible creatures, believers excepted, who are spoken of apart; each kind, according as it is capable. All these have been sufferers through sin; and to all these (the finally impenitent excepted) shall refreshment redound from the glory of the children of God. Upright heathens are by no means to be excluded from this earnest expectation: nay, perhaps something of it may at some times be found even in the vainest of men; who (although in the hurry of life they mistake vanity for liberty, and partly stifle. partly dissemble, their groans, yet) in their sober, quiet, sleepless, afflicted hours, pour forth many sighs in the ear of God.