"“The Assyrian was a cedar in Lebanon with fair branches, and with a shadowing shroud, and of an high stature; and his top was among the thick boughs.... Under his shadow dwelt all great nations. Thus was he fair in his greatness, in the length of his branches: for his root was by great waters. The cedars in the garden of God could not hide him: the fir trees were not like his boughs, and the chestnut trees were not like his branches; nor any tree in the garden of God was like unto him in his beauty.... All the trees of Eden, that were in the garden of God, envied him.” Ezekiel 31:3-9 . PK 363.1"
"Behold, the Assyrian was a cedar in Lebanon with fair branches, and with a shadowing shroud, and of an high stature; and his top was among the thick boughs. The waters made him great, the deep set him up on high with her rivers running round about his plants, and sent out her little rivers unto all the trees of the field. Therefore his height was exalted above all the trees of the field, and his boughs were multiplied, and his branches became long because of the multitude of waters, when he shot forth. All the fowls of heaven made their nests in his boughs, and under his branches did all the beasts of the field bring forth their young, and under his shadow dwelt all great nations. Thus was he fair in his greatness, in the length of his branches: for his root was by great waters. The cedars in the garden of God could not hide him: the fir trees were not like his boughs, and the chesnut trees were not like his branches; nor any tree in the garden of God was like unto him in his beauty. I have made him fair by the multitude of his branches: so that all the trees of Eden, that were in the garden of God, envied him."
Ellen White directly references Ezekiel 31:3-9 in this passage.
"But the rulers of Assyria, instead of using their unusual blessings for the benefit of mankind, became the scourge of many lands. Merciless, with no thought of God or their fellow men, they pursued the fixed policy of causing all nations to acknowledge the supremacy of the gods of Nineveh, whom they exalted above the Most High. God had sent Jonah to them with a message of warning, and for a season they humbled themselves before the Lord of hosts and sought forgiveness. But soon they turned again to idol worship and to the conquest of the world. PK 363.2"
"So the people of Nineveh believed God, and proclaimed a fast, and put on sackcloth, from the greatest of them even to the least of them."
Both passages discuss the Ninevites' initial repentance after Jonah's preaching. The EGW passage expands on the initial repentance and subsequent backsliding into idolatry, which is thematically linked to Jonah's message and the Ninevites' response.
"Woe to the bloody city! it is all full of lies and robbery; the prey departeth not;"
This is a direct quote from Nahum 3:1. While short, it's a clear reference.
"“The noise of a whip, and the noise of the rattling of the wheels, And of the prancing horses, and of the jumping chariots. PK 363.5"
"The noise of a whip, and the noise of the rattling of the wheels, and of the pransing horses, and of the jumping chariots."
This is a direct quote from Nahum 3:2.