Romans 12:15

Verse 15. Rejoice with them, etc. This command grows out of the doctrine stated in Ro 12:4,5 that the church is one; that it has one interest; and therefore that there should be common sympathy in its joys and sorrows. Or, enter into the welfare of your fellow- Christians, and show your attachment to them by rejoicing that they are made happy. Comp. 1 Co 12:26. "And whether-- one member be honoured, all the members rejoice with it." In this way happiness diffuses and multiplies itself. It becomes expanded over the face of the whole society; and the union of the Christian body tends to enlarge the sphere of happiness, and to prolong the joy conferred by religion.