Charles H. Spurgeon on Psalms 15:2

But here observe, David saith, "that worketh righteousness;" not that talks about, thinks about, or hears of, righteousness; because, "not the hearers of the law, but the doers of the law, shall be justified." What then do we owe unto others? That which Christ saith (Matthew 7), "Whatsoever ye would that men should do unto you, do ye also unto them," even unto your enemies: that is, to injure no one, to succour those that suffer injury, and to do good unto all men. But these things, I say, are spoken especially unto those who have respect of persons; as if he has said, It is not because thou art a priest, nor because thou art of a religious order, not because thou prayest much, nor because thou doest miracles, nor because thou teachest excellently, nor because thou art dignified with the title of father, nor because thou art the doer of any work (except righteousness), that thou shalt rest in the holy hill of the Lord; for if thou be destitute of the works of righteousness, neither all thy good works, nor thy indulgences, nor thy votes and suffrages, nor thy intercessions, shall avail thee anything. Therefore, the truth is firm; that it is the walker without spot, and the doer of righteousness, that shall rest in the tabernacles of the Lord. Yet how many are there, who build, increase and adorn churches, monastaries, altars, vessels, garments, etc., who, all the while, never so much as think of the works of righteousness; nay, who tread righteousness under foot that they may work these their own works, and because of them hope to gain the pardon of their unrighteousness, while thousands are deceived by these means! Hence, in the last day, Christ will say, "I was an hungered, I was thirsty, I was naked, I was in prison, I was a stranger." He will not say one word about those works which are done and admired at this day. And, on the other hand, it is of no account against thee that thou art a layman, or poor, or sick, or contemptible, or how vile soever thou art, if thou workest righteousness, thou shalt be saved. The only work that we must hope will be considered and accounted of, is the work of righteousness: all other works that either urge or allure us on under a show of godliness, are a thing of naught. Martin Luther.