“In the fourth century Augustine advocated using the Latin word religio by highlighting its etymology re-ligare, which means ‘to join together’ or ‘to bind together’ as in a covenant bond between man and God. The word religion, rightly understood, joins together everything we believe as we live it out in all of life. Furthermore, if we consider the lexical definitions of the word religion, we observe that religion describes not only a person’s system of belief but also what a person practices, observes, and devotes himself to. As Herman Bavinck writes, ‘Religion must not just be something in one’s life, but everything. Jesus demands that we love God with all our heart, all our soul, and all our strength’.”
– Burk Parsons, Why Do We Have Creeds? (Basics of the Faith Series: Presbyterian & Reformed, 2012), 10-11.