"In the presence of that powerful and titled assembly the lowly born Reformer seemed awed and embarrassed. Several of the princes, observing his emotion, approached him, and one of them whispered: “Fear not them which kill the body, but are not able to kill the soul.” Another said: “When ye shall be brought before governors and kings for My sake, it shall be given you, by the Spirit of your Father, what ye shall say.” Thus the words of Christ were brought by the world's great men to strengthen His servant in the hour of trial. GC 155.2"
"And fear not them which kill the body, but are not able to kill the soul: but rather fear him which is able to destroy both soul and body in hell."
The EGW passage directly quotes Matthew 10:28, making it an explicit allusion.
crowded assembly. Then an imperial officer arose and, pointing to a collection of Luther's writings, demanded that the Reformer answer two questions—whether he acknowledged them as his, and whether he proposed to retract the opinions which he had therein advanced. The titles of the books having been read, Luther replied that as to the first question, he acknowledged the books to be his. “As to the second,” he said, “seeing that it is a question which concerns faith and the salvation of souls, and in which the word of God, the greatest and most precious treasure either in heaven or earth, is involved, I should act imprudently were I to reply without reflection. I might affirm less than the circumstance demands, or more than truth requires, and so sin against this saying of Christ: ‘Whosoever shall deny Me before men, him will I also deny before My Father which is in heaven.’ [ Matthew 10:33 .] For this reason I entreat your imperial majesty, with all humility, to allow me time, that I m…
"But whosoever shall deny me before men, him will I also deny before my Father which is in heaven."
Ellen White directly references Matthew 10:33 in this passage.