"Every mile we traveled he felt strengthened. The Lord sustained him. And while he was preaching the Word, I felt assured that angels of God were standing by his side. LS 149.1"
"He giveth power to the faint; and to them that have no might he increaseth strength."
The passage describes James White being strengthened as he traveled and preached, which directly parallels the concept in Isaiah 40:29 of God giving power to the faint and increasing strength to those who have no might.
"me regarding their condition, and I endeavored to bear a straightforward testimony. Some refused to heed the counsel given, and began to fight against my testimony; and here began what later became known as the Messenger party. LS 149.2"
"For I have not shunned to declare unto you all the counsel of God."
Ellen White's statement about bearing a straightforward testimony and declaring counsel, even when it was rejected, aligns with the sentiment in Acts 20:27 where Paul states he has not shunned to declare all the counsel of God. Both passages emphasize the importance of delivering God's message, even when it is unpopular.
"“While in Michigan we visited Tyrone, Jackson, Sylvan, Bedford, and Vergennes. My husband in the strength of God endured the journey and his labor well. Only once did his strength entirely fail him. He was unable to preach at Bedford. He went to the place of meeting, and stood up in the desk to preach, but became faint and was obliged to sit down. He asked Elder J. N. Loughborough to take the subject where he had left it, and finish the discourse. Then he went out of the house into the open air, and lay upon the green grass until he had somewhat recovered, when Brother Kelsey let him take his horse, and he rode alone one mile and a half to Brother Brooks's. LS 149.4"
"And he said unto me, My grace is sufficient for thee: for my strength is made perfect in weakness. Most gladly therefore will I rather glory in my infirmities, that the power of Christ may rest upon me."
While not a direct quote, the description of James White's physical weakness and reliance on God's strength to continue his work echoes the sentiment of 2 Corinthians 12:9, where strength is made perfect in weakness.