The song was written by Hillsong worship pastors Ben Fielding and Reuben Morgan - the latter supplies the male lead vocals. The pair penned the song after a conversation about the huge number of people who seem to be struggling with anxiety and stress. Fielding explained to NewReleaseToday
"One of the top challenges that young people face is anxiety, over their careers or relationships or specific issues. We wanted to write a song that would speak to that, which is 'Be Still.' Through that process, we wrote 'Who You Say I Am' because we realized that it is so important to understand how God sees us, and what He says about us. It's so important to go to the Scriptures and read who God says we are. The way we show God is determined by the way we know God."