“In keeping faith I hope you are able to know that there are some things that must be taken on faith; and that, in our insatiable quest for knowledge, always preparatory to and preliminary to gaining spiritual knowledge there is the exercise of faith. As the prophet Moroni said, ‘Dispute not because ye see not, for ye receive no witness until after the trial of your faith’ (Ether 12:6)” (Packer, Let Not Your Heart Be Troubled, 147–48).