"William Miller [See Appendix .] God sent His angel to move upon the heart of a farmer who had not believed the Bible, to lead him to search the prophecies. Angels of God repeatedly visited that chosen one, to guide his mind and open to his understanding prophecies which had ever been dark to God's people. The commencement of the chain of truth was given to him, and he was led on to search for link after link, until he looked with wonder and admiration upon the Word of God. He saw there a perfect chain of truth. That Word which he had regarded as uninspired now opened before his vision in its beauty and glory. He saw that one portion of Scripture explains another, and when one passage was closed to his understanding, he found in another part of the Word that which explained it. He regarded the sacred Word of God with joy and with the deepest respect and awe. EW 229"
"Surely the Lord God will do nothing, but he revealeth his secret unto his servants the prophets."
Both passages suggest that God reveals his plans to chosen individuals. The EGW passage describes God sending an angel to William Miller to understand prophecies, which aligns with Amos 3:7 stating that God reveals his secrets to his servants the prophets.
"With trembling, William Miller began to unfold to the people the mysteries of the kingdom of God, carrying his hearers down through the prophecies to the second advent of Christ. With every effort he gained strength. As John the Baptist heralded the first advent of Jesus and prepared the way for His coming, so William Miller and those who joined with him proclaimed the second advent of the Son of God. EW 229.2"
"And he shall go before him in the spirit and power of Elias, to turn the hearts of the fathers to the children, and the disobedient to the wisdom of the just; to make ready a people prepared for the Lord."
Both passages draw a parallel between John the Baptist preparing the way for Jesus' first coming and another figure preparing the way for a future event. The EGW passage explicitly compares William Miller to John the Baptist, proclaiming the second advent, which aligns with Luke 1:17 describing John's role in making ready a people prepared for the Lord.