"“I have had precious opportunities to obtain an experience. I have had an experience in the first, second, and third angels’ messages. The angels are represented as flying in the midst of heaven, proclaiming to the world a message of warning, and having a direct bearing upon the people living in the last days of this earth's history. No one hears the voice of these angels, for they are a symbol to represent the people of God who are working in harmony with the universe of heaven. Men and women, enlightened by the Spirit of God, and sanctified through the truth, proclaim the three messages in their order. LS 429.1"
"And I saw another angel fly in the midst of heaven, having the everlasting gospel to preach unto them that dwell on the earth, and to every nation, and kindred, and tongue, and people,"
EGW's description of the three angels' messages directly relates to the angel flying in the midst of heaven in Revelation 14:6, though it expands on the concept.
"“`That which was from the beginning, which we have heard, which we have seen with our eyes, which we have looked upon, and our hands have handled, of the Word of life; ... that which we have seen and heard declare we unto you, that ye also may have fellowship with us.’ LS 429.3"
"That which was from the beginning, which we have heard, which we have seen with our eyes, which we have looked upon, and our hands have handled, of the Word of life;"
EGW directly quotes 1 John 1:1.