"Holy angels have been displeased and disgusted with the irreverent manner in which many have used the name of God, the great Jehovah. Angels mention that sacred name with the greatest awe, ever veiling their faces when they speak the name of God; and the name of Christ is so sacred to them that they speak it with the greatest reverence. But how opposite the spirit and influence attending the 1854 time movement. Some who are still under the same influence speak of God as they would of a horse or of any other commonplace thing. In their prayers they use the words God Almighty in a very common and irreverent manner. Those who do this have no sense of the exalted character of God, of Christ, or of heavenly things. 1T 410.1"
"Thou shalt not take the name of the Lord thy God in vain; for the Lord will not hold him guiltless that taketh his name in vain."
The EGW passage discusses the irreverent use of God's name, contrasting it with the reverence shown by angels. This directly relates to the principle in Exodus 20:7, which prohibits taking the Lord's name in vain. The EGW passage provides a specific example of what constitutes taking God's name in vain.
"Above it stood the seraphims: each one had six wings; with twain he covered his face, and with twain he covered his feet, and with twain he did fly."
The EGW passage directly references the angels veiling their faces, which is explicitly described in Isaiah 6:2. This is more than just a thematic parallel; it's a specific detail drawn from the biblical text to illustrate the reverence due to God.
"And he said, Draw not nigh hither: put off thy shoes from off thy feet, for the place whereon thou standest is holy ground."
Both passages deal with reverence in the presence of the divine. Exodus 3:5 describes a specific act of reverence (removing shoes) due to holy ground, while EGW discusses the irreverent use of God's name. The connection is thematic, but not a direct allusion.
"of the Lord's host said unto Joshua, Loose thy shoe from off thy foot; for the place whereon thou standest is holy. And Joshua did so.” If angels were thus feared and honored because they came from the presence of God, with how much greater reverence should God Himself be regarded. 1T 410.2"
"And the captain of the Lord’s host said unto Joshua, Loose thy shoe from off thy foot; for the place whereon thou standest is holy. And Joshua did so."
EGW directly quotes Joshua 5:15.