I've heard people make the case that the RPW is not only derived from such things as the 2nd commandment, but even from the principle of sola scriptura -- that Scripture is the only rule of faith and life, a completely sufficient rule to tell us how to glorify and enjoy God. I've read some on the subject, but I could use some more explanation and resources on the topic. (I think I may even need help understanding sola scriptura more deeply.) Thanks!