story behind if we are the body by casting crowns
The song was originally written for use as a "teaching tool" in Mark Hall's youth group.
If We Are the Body
According to lead singer Mark Hall, "If We Are the Body" was originally written for use as a "teaching tool" in his youth group. 
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If We Are the Body [SEP] Background and recording
According to lead singer Mark Hall, "If We Are the Body" was originally written for use as a "teaching tool" in his youth group. Hall, a youth pastor, said that "[the youth group had] forgotten what the body of Christ looked like" and commented that "The world is well aware of what the church is against, but they aren't always aware of what it's for. Everybody in the body of Christ is given gifts to minister with; and when Christians aren't using these gifts, the body suffers". Hall's inspiration for writing the song came from the second chapter of the book of James, where the writer "admonishes" readers to "steer clear of giving preferential treatment to any one particular group over another, such as favoring the rich over the poor".