This is the lead single and title track from American Contemporary Christian rock band Casting Crown's fourth studio album.
The band's lead singer and songwriter Mark Hall explained the message of this song: "As we travel through our journey as Christians, we come to a realization that there are lots of people out there who need to hear about Jesus. Through our maturity, we begin to see the world as God sees the world and work with purpose to show people Jesus, until the whole world hears."
The song's title comes from an e-mail signature of Roger Glidewell, Hall's mentor in student ministry, who closes his messages with the phrase, "Until the whole world hears."
The Until The Whole World Hears album recorded 167,000 sales in its first week, marking Casting Crowns' best sales week to date. The band's previous best came when The Altar and the Door debuted with 129,000 copies in September of 2007. It was later reported that the first week figures not only broke Casting Crowns own sales records but was also the largest selling debut week sales figures by a Christian artist in Nielsen Soundscan history.