[...]Back in 1980, with no infomercials to boggle the brain at 3 a.m., Cathy Perrin turned a sleepless night into worship meant for a king. As Wayne slept, Cathy crept into a spare bedroom and began to write down her thoughts.

“The chorus was just a very basic simple thought—about the reason God created us, which was to worship Him,” says Cathy. “Our primary focus is that we were created to worship Him. When you see His holiness, it should create a worshipful heart. I just looked for ways to express that in a form that hopefully other people could relate to, and it all kind of came together.”

After the two added the finishing touches, the song joined a list of others they performed in their travels.

“To us it was just another worship song. We’d written many, many scores, and this was just another one,” recalls Wayne.

But churches began to pick up on the tune, and it passed along from church to church like wildfire. In 1981, Integrity Music tracked the couple down. They’d already recorded the song for one of their projects, but needed to get in touch with the Perrins in order to pay royalties for the cut. [...]

(http://www.crosswalk.com/church/worship/song-story-when-i-look-into-your-holiness-1286092.html)