"734.4 Satan's rage was great as he saw that all the abuse inflicted upon the Saviour had not forced the least murmur from His lips. Although He had taken upon Him the nature of man, He was sustained by a godlike fortitude, and departed in no particular from the will of His Father. DA 735.1"
"He was oppressed, and he was afflicted, yet he opened not his mouth: he is brought as a lamb to the slaughter, and as a sheep before her shearers is dumb, so he openeth not his mouth."
Both passages highlight the silence and lack of complaint from Jesus/the suffering servant in the face of affliction. The connection is strong and supports the idea that EGW is drawing upon Isaiah 53:7 to describe Jesus's demeanor during his suffering.
"There stood the Son of God, wearing the robe of mockery and the crown of thorns. Stripped to the waist, His back showed the long, cruel stripes, from which the blood flowed freely. His face was stained with blood, and bore the marks of exhaustion and pain; but never had it appeared more beautiful than now. The Saviour's visage was not marred before His enemies. Every feature expressed gentleness and resignation and the tenderest pity for His cruel foes. In His manner there was no cowardly weakness, but the strength and dignity of long- suffering. In striking contrast was the prisoner at His side. Every line of the countenance of Barabbas proclaimed him the hardened ruffian that he was. The contrast spoke to every beholder. Some of the spectators were weeping. As they looked upon Jesus, their hearts were full of sympathy. Even the priests and rulers were convicted that He was all that He claimed to be. DA 735.4"
"And when they had platted a crown of thorns, they put it upon his head, and a reed in his right hand: and they bowed the knee before him, and mocked him, saying, Hail, King of the Jews!"
EGW describes the crown of thorns, which is explicitly mentioned in Matthew 27:29.
"But he was wounded for our transgressions, he was bruised for our iniquities: the chastisement of our peace was upon him; and with his stripes we are healed."
EGW's description of Jesus' suffering aligns with the prophecy in Isaiah 53:5, particularly the mention of stripes and wounds. While not a direct quote, the thematic connection is strong.
"Who, when he was reviled, reviled not again; when he suffered, he threatened not; but committed himself to him that judgeth righteously:"
EGW's description of Jesus' gentleness and lack of retaliation during suffering echoes the sentiment in 1 Peter 2:23. It's not a direct quote, but a clear thematic parallel.
"The Roman soldiers that surrounded Christ were not all hardened; some were looking earnestly into His face for one evidence that He was a criminal or dangerous character. From time to time they would turn and cast a look of contempt upon Barabbas. It needed no deep insight to read him through and through. Again they would turn to the One upon trial. They looked at the divine sufferer with feelings of deep pity. The silent submission of Christ stamped upon their minds the scene, never to be effaced until they either acknowledged Him as the Christ, or by rejecting Him decided their own destiny. DA 735.5"
"Now when the centurion saw what was done, he glorified God, saying, Certainly this was a righteous man."
Both passages describe the reaction of Roman soldiers/centurion to Jesus during the trial/crucifixion. The EGW passage expands on the possible thoughts and feelings of the soldiers, while Luke focuses on the centurion's declaration of Jesus' righteousness. The connection is thematic, focusing on the Roman perspective and recognition of Jesus' innocence.