"In the days of Paul the gospel for which he was imprisoned was thus brought before the princes and nobles of the imperial city. So on this occasion, that which the emperor had forbidden to be preached from the pulpit was proclaimed from the palace; what many had regarded as unfit even for servants to listen to was heard with wonder by the masters and lords of the empire. Kings and great men were the auditory, crowned princes were the preachers, and the sermon was the royal truth of God. “Since the apostolic age,” says a writer, “there has never been a greater work or a more magnificent confession.”—D'Aubigne, b. 14, ch. 7. GC 208.1"
"For the king knoweth of these things, before whom also I speak freely: for I am persuaded that none of these things are hidden from him; for this thing was not done in a corner."
Both passages highlight the gospel being proclaimed before rulers and nobles, even in situations where it was initially suppressed. The EGW passage explicitly draws a parallel between Paul's ministry and the Reformation, making the connection clear.
Some of the princes of Germany were won to the reformed faith. The emperor himself declared that the Protestant articles were but the truth. The Confession was translated into many languages and circulated through all Europe, and it has been accepted by millions in succeeding generations as the expression of their faith. GC 208.3 God's faithful servants were not toiling alone. While principalities and powers and wicked spirits in high places were leagued against them, the Lord did not forsake His people. Could their eyes have been opened, they would have seen as marked evidence of divine presence and aid as was granted to a prophet of old. When Elisha's servant pointed his master to the hostile army surrounding them and cutting off all opportunity for escape, the prophet prayed: “Lord, I pray Thee, open his eyes, that he may see.” 2 Kings 6:17 . And, lo, the mountain was filled with chariots and horses of fire, the army of heaven stationed to protect the man of God. Thus did angels gua…
"And Elisha prayed, and said, Lord, I pray thee, open his eyes, that he may see. And the Lord opened the eyes of the young man; and he saw: and, behold, the mountain was full of horses and chariots of fire round about Elisha."
Ellen White directly references 2 Kings 6:17 in this passage.