Rejoice with them that do rejoice, and weep with them that weep.
Be of the same mind one toward another. Mind not high things, but condescend to men of low estate. Be not wise in your own conceits [Rom. 12:15–16].
“Rejoice with them that do rejoice.” The world’s motto is “Laugh and the world laughs with you; weep and you weep alone.” But that is not true of the believer. We are to enter into the joys and sorrows of other believers. Weep with those who weep.
“Be of the same mind one toward another” doesn’t mean uniformity of thought but that we are to have the mind of Christ.
Believers ought to enter emotionally into the lives of other believers. I think that is something that makes genuine Christians so wonderful.
“Mind not high things, but condescend to men of low estate.” My friend, let’s not be afraid of associating with humble men and things of low estate. Paul said to the Philippians, “Let this mind be in you, which was also in Christ Jesus” (Phil. 2:5)—what kind of a mind did Christ have? A humble mind.
“Be not wise in your own conceits.” In other words, stop being wise in your own opinion. What an injunction that is! A great many of the saints think they are spiritual giants, but they are not. Solomon, who was a man with wisdom from God, gave a very interesting injunction: “Seest thou a man wise in his own conceit? there is more hope of a fool than of him” (Prov. 26:12). I wouldn’t dare say a thing like that, but Solomon said it.
McGee, J. Vernon: Thru the Bible Commentary. electronic ed. Nashville : Thomas Nelson, 1997, c1981, S. 4:733