Country music’s Florida Georgia Line turned their sold-out Atlanta concert last week into a full-on worship service when they invited a renowned Christian singer-songwriter who had become one of their “really good buddies.”

In a video shared on their Facebook page, Tyler Hubbard, who met bandmate Brian Kelley leading worship in college, said, “We get to do something we’ve been looking forward to a long time now. We’ve never done this before.”

“This is probably one of the coolest moments for us. Truly a full circle God-thing,” Hubbard added before announcing their special guest. “I mean God’s been moving in our life, in our community, and in our industry and we just want to do something special tonight and bring one of our good buddies, Mr. Chris Tomlin.”

The crowd erupted in applause.

“This is crazy. I’ve sung this song all over the world and being here tonight with these two brothers … We’re just going to have a moment to give God praise in Atlanta,” Tomlin said.

In the six-minute clip, the musicians lead the audience in “How Great Is Our God” and “How Great Thou Art.”

“Thank you, Jesus. Thank you, Chris Tomlin,” the duo concluded at the end of the video.

Video of their performance has been viewed more than 2 million times on Facebook.