These things I have spoken unto you, that in me ye might have peace. In the world ye shall have tribulation: but be of good cheer; I have overcome the world.
John 16:33
I have always loved this scripture, and recently, I studied what “things he [had] spoken unto [them]” so they could have peace and be of good cheer. His teachings leading up to this statement of be of good cheer are all about the Father, the Son, and the Holy Ghost coming to our aid. I like this quote from Elder Holland,
“Jesus held on. He pressed on. The goodness in Him allowed faith to triumph even in a state of complete anguish…Brothers and sisters, one of the great consolations … is that because Jesus walked such a long, lonely path utterly alone, we do not have to do so. His solitary journey brought great company for our little version of that path—the merciful care of our Father in Heaven, the unfailing companionship of this Beloved Son, the consummate gift of the Holy Ghost, angels in heaven, family members on both sides of the veil, prophets and apostles, teachers, leaders, friends. All of these and more have been given as companions for our mortal journey because of the Atonement of Jesus Christ and the Restoration of His gospel. Trumpeted from the summit of Calvary is the truth that we will never be left alone nor unaided, even if sometimes we may feel that we are. Truly the Redeemer of us all said: ‘I will not leave you comfortless: [My Father and] I will come to you [and abide with you].’ (John 14:18)”
-Elder Jeffrey R. Holland, “None Were With Him,” Ensign, May 2009.