as my colleague ephraim graham reports, they accepted their mission at a new year's conference called passion 2013. >> reporter: 60,000 students packed atlanta's georgiadome for a party. a time of worship. >> jesus in infinitely worthy of eternal admiration. >> reporter: and to hear god's word. this is passion 2013, an annual conference for young christians that grows larger each year. >> these students are coming together. lifting up the name of jesus together, and with that, it's a beautiful sight. >> reporter: this is an army of believers from all 50 states, and 54 countries. they are leading these young people in what many would call an impossible mission. it is called "end it now." it's a fight to end modern day slavery. >> one thing we can agree on is there are 27 million slaves, and there should be no more slaves. so we're going to lift that up and put it front and center. >> reporter: armed with smartphones, credit cards, and ipads, young people attended. and passion is partnered with more than a dozen organizations on the ground and around the world. >> we believe jesus was t