"“These things I have spoken unto you,” He said, “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 ,] Christ did not fail, neither was He discouraged; and His followers are to manifest a faith of the same enduring nature. They are to live as He lived, and work as He worked, because they depend on Him as the great Master-worker. GW 39.1"
"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."
Ellen White directly references John 16:33 in this passage.