The first week of our Seminary year, I showed THIS video clip from Elder Holland.
I had my class read in Ether 12:37-38 just as Hyrum Smith read to the Prophet Joseph Smith right before they were martyred.
Just as Hyrum Smith did after he read that passage, I had my students fold down the corner of that page as a reminder of the sacrifices made so that we are blessed to have the Book of Mormon in our day.
Once in awhile, I have referred to the "Ether 12" folded down page as we have discussed standing up for what we believe in, defending and sharing our testimonies of the Book of Mormon and Jesus Christ, etc. I have seen my students turn to that page and noted that the corner of the page is still turned down.
As we are approaching the end of our Book of Mormon study, I am showing this as a follow up. We are spending a few minutes each day viewing various testimonies recorded on Mormon Messages as well as the testimonies of latter-day Prophets and Apostles.
This video from Elder Holland is one of the most powerful messages we have heard all year.