MercyMe's lead singer Bart Millard wrote "Word of God Speak" while touring in support of their single "I Can Only Imagine".
After falling asleep, Millard woke up early in the morning and wrote several lines to the song in his journal before going back to sleep.
[2] "Word of God Speak" is a contemporary Christian song with a length of three minutes and seven seconds.
[3] It is set in the key of C major and has a tempo of 69 beats per minute, with Millard's vocal range spanning from C4-F5.
[3] The music to "Word of God Speak" is stripped down, featuring piano and vocals; a string track is also present.
[1] The simple production was intended to mirror the lyrics of the song,[1] which reflect on the concept that it is impossible to speak of an infinite God with the limited vocabulary of humanity.
[1] A critic, Russ Breimier, also noted the song reminds that "prayer and worship are not flowery orations".
[4] On his review of Spoken For, Russ Breimeier commented that "I particularly liked the brief "Word of God Speak," which simply reminds us that prayer and worship aren't about flowery orations...
[14] In 2004, contemporary Christian band Big Daddy Weave recorded a version of the song that was included on the compilation album WOW Worship: Red.