John informed his disciples that Jesus was the promised Messiah, the Saviour of the world. As his work was closing, he taught his disciples to look to Jesus, and follow Him as the Great Teacher. John's life was sorrowful and self-denying. He heralded the first advent of Christ, but was not permitted to witness His miracles, and enjoy the power manifested by Him. When Jesus should establish Himself as a teacher, John knew that he himself must die. His voice was seldom heard, except in the wilderness. His life was lonely. He did not cling to his father's family, to enjoy their society, but left them in order to fulfill his mission. Multitudes left the busy cities and villages and flocked to the wilderness to hear the words of the wonderful prophet. John laid the ax to the root of the tree. He reproved sin, fearless of consequences, and prepared the way for the Lamb of God. EW 154.1 Herod was affected as he listened to the powerful, pointed testimonies of John, and with deep interest he i…
"The next day John seeth Jesus coming unto him, and saith, Behold the Lamb of God, which taketh away the sin of the world."
The EGW passage directly references John's declaration of Jesus as the Lamb of God, echoing the language and context of John 1:29.