The Saturday morning Bible study was going over Hebrews 10 and 11. One of the exercises was to read through Hebrews 11 and note the actions each of the heroes of faith did. One commonality was obedience (including testifying at the appropriate time). Not just any old works, obedience.
James wrote that "faith without works is dead." Maybe we could read that as "obedience without works is dead." Or "faith without obedience isn't faith."