"As the king gazed upon the lofty tree, he beheld “a Watcher,” even “an Holy One,” who approached the tree and in a loud voice cried: PK 516.1"
"I saw in the visions of my head upon my bed, and, behold, a watcher and an holy one came down from heaven;"
EGW directly references the 'Watcher' and 'Holy One' from Daniel 4:13. This is a clear and direct allusion.
"his portion be with the beasts in the grass of the earth: let his heart be changed from man's, and let a beast's heart be given unto him; and let seven times pass over him. This matter is by the decree of the watchers, and the demand by the word of the holy ones: to the intent that the living may know that the Most High ruleth in the kingdom of men, and giveth it to whomsoever He will, and setteth up over it the basest of men.” PK 516.2"
"That they shall drive thee from men, and thy dwelling shall be with the beasts of the field, and they shall make thee to eat grass as oxen, and they shall wet thee with the dew of heaven, and seven times shall pass over thee, till thou know that the most High ruleth in the kingdom of men, and giveth it to whomsoever he will."
The EGW passage directly quotes and paraphrases Daniel 4:25, making it a clear explicit allusion.
"This matter is by the decree of the watchers, and the demand by the word of the holy ones: to the intent that the living may know that the most High ruleth in the kingdom of men, and giveth it to whomsoever he will, and setteth up over it the basest of men."
The EGW passage directly quotes and paraphrases Daniel 4:17, making it a clear explicit allusion.
"Greatly troubled by the dream, which was evidently a prediction of adversity, the king repeated it to “the magicians, the astrologers, the Chaldeans, and the soothsayers;” but although the dream was very explicit, none of the wise men could interpret it. PK 516.3"
"Daniel answered in the presence of the king, and said, The secret which the king hath demanded cannot the wise men, the astrologers, the magicians, the soothsayers, shew unto the king;"
The EGW passage references the same group of people (magicians, astrologers, etc.) and the inability to interpret the dream, directly alluding to Daniel 2:27.
"Once more in this idolatrous nation, testimony was to be borne to the fact that only those who love and fear God can understand the mysteries of the kingdom of heaven. The king in his perplexity sent for his servant Daniel, a man esteemed for his integrity and constancy and for his unrivaled wisdom. PK 516.4"
"He answered and said unto them, Because it is given unto you to know the mysteries of the kingdom of heaven, but to them it is not given."
The EGW passage discusses Daniel's ability to understand mysteries due to his relationship with God, which aligns with the general theme of Matthew 13:11 regarding the ability to understand the mysteries of the kingdom of heaven being given to some but not others.
"But the natural man receiveth not the things of the Spirit of God: for they are foolishness unto him: neither can he know them, because they are spiritually discerned."
Both passages deal with the idea that spiritual understanding is not available to everyone. The EGW passage speaks of those who love and fear God understanding mysteries, while the verse from 1 Corinthians speaks of the 'natural man' not receiving the things of the Spirit. The connection is thematic, but not a direct allusion.