An excerpt from "David Wilber.com" entitled, "Rejoice With Those Who Rejoice" states: "The Bible instructs us not to get jealous over others’ success but to “rejoice with those who rejoice” (Romans 12:15). It also says that if one member of the body of Messiah is honored, all are to rejoice together (1 Corinthians 12:26)." This article may be viewed at: Rejoice With Those Who Rejoice/davidwilber.com
Reference: Romans 12:15