"The hope and joy that this assurance brought to the young church at Thessalonica can scarcely be appreciated by us. They believed and cherished the letter sent to them by their father in the gospel, and their hearts went out in love to him. He had told them these things before; but at that time their minds were striving to grasp doctrines that seemed new and strange, and it is not surprising that the force of some points had not been vividly impressed on their minds. But they were hungering for truth, and Paul's epistle gave them new hope and strength, and a firmer faith in, and a deeper affection for, the One who through His death had brought life and immortality to light. AA 259.1"
"For the Lord himself shall descend from heaven with a shout, with the voice of the archangel, and with the trump of God: and the dead in Christ shall rise first:"
The EGW passage discusses the hope and joy derived from the assurance of resurrection, which is the central theme of 1 Thessalonians 4:16, although it doesn't directly quote it.
"Now they rejoiced in the knowledge that their believing friends would be raised from the grave to live forever in the kingdom of God. The darkness that had enshrouded the resting place of the dead was dispelled. A new splendor crowned the Christian faith, and they saw a new glory in the life, death, and resurrection of Christ. AA 259.2"
"So when this corruptible shall have put on incorruption, and this mortal shall have put on immortality, then shall be brought to pass the saying that is written, Death is swallowed up in victory."
Both passages discuss the resurrection and the victory over death. The EGW passage speaks of the dispelling of darkness and new glory, while 1 Corinthians 15:54 speaks of immortality and death being swallowed up in victory. They share a common theme.
"While laboring at Thessalonica, Paul had so fully covered the subject of the signs of the times, showing what events would occur prior to the revelation of the Son of man in the clouds of heaven, that he did not think it necessary to write at length regarding this subject. He, however, pointedly referred to his former teachings. “Of the times and the seasons,” he said, “ye have no need that I write unto you. For yourselves know perfectly that the day of the Lord so cometh as a thief in the night. For when they shall say, Peace and safety; then sudden destruction cometh upon them.” AA 259.4"
"But of the times and the seasons, brethren, ye have no need that I write unto you."
EGW directly quotes 1 Thessalonians 5:1 and references Paul's teachings on the signs of the times, making this a clear and intentional allusion.