Great dangers threatened the Reformation; but its advocates still trusted their cause with God, and pledged themselves to be firm to the gospel. The elector of Saxony was urged by his councilors not to appear at the Diet. The emperor, they said, required the attendance of the princes in order to draw them into a snare. “Is it not risking everything to go and shut oneself up within the walls of a city with a powerful enemy?” But others nobly declared, “Let the princes only comport themselves with courage, and God's cause is saved.” “God is faithful; He will not abandon us,” said Luther.— Ibid., b. 14, ch. 2. The elector set out, with his retinue, for Augsburg. All were acquainted with the dangers that menaced him, and many went forward with gloomy countenance and troubled heart. But Luther, who accompanied them as far as Coburg, revived their sinking faith by singing the hymn, written on that journey, “A strong tower is our God.” Many an anxious foreboding was banished, many a heavy hea…
"And they that know thy name will put their trust in thee: for thou, Lord, hast not forsaken them that seek thee."
Both passages deal with trusting in God during times of danger and persecution. The Psalm speaks of God not forsaking those who seek Him, while the EGW passage describes Luther's encouragement to trust in God amidst threats to the Reformation. The connection is thematic, not a direct quote or principle, but it's a valid parallel.
The reformed princes had determined upon having a statement of their views in systematic form, with the evidence from the Scriptures, to present before the Diet; and the task of its preparation was committed to Luther, Melanchthon, and their associates. This Confession was accepted by the Protestants as an exposition of their faith, and they assembled to affix their names to the important document. It was a solemn and trying time. The Reformers were solicitous that their cause should not be confounded with political questions; they felt that the Reformation should exercise no other influence than that which proceeds from the word of God. As the Christian princes advanced to sign the Confession, Melanchthon interposed, saying: “It is for the theologians and ministers to propose these things; let us reserve for other matters the authority of the mighty ones of the earth.” “God forbid,” replied John of Saxony, “that you should exclude me. I am resolved to do what is right, without troubli…
"But sanctify the Lord God in your hearts: and be ready always to give an answer to every man that asketh you a reason of the hope that is in you with meekness and fear:"
Both passages relate to defending one's faith. 1 Peter 3:15 speaks of being ready to give an answer for one's hope, while the EGW passage describes the Reformers preparing a statement of their views and the princes' eagerness to stand with them. The connection is thematic, focusing on the importance of articulating and standing up for one's beliefs.