"Notwithstanding the plots of enemies, open and secret, the work of building went steadily forward, and in less than two months from the time of Nehemiah's arrival in Jerusalem the city was girded with its defenses and the builders could walk upon the walls and look down upon their defeated and astonished foes. “When all our enemies heard thereof, and all the heathen that were about us saw these things,” Nehemiah writes, “they were much cast down in their own eyes: for they perceived that this work was wrought of our God.” PK 657.1"
"And it came to pass, that when all our enemies heard thereof, and all the heathen that were about us saw these things, they were much cast down in their own eyes: for they perceived that this work was wrought of our God."
EGW directly quotes Nehemiah 6:16.
"Yet even this evidence of the Lord's controlling hand was not sufficient to restrain discontent, rebellion, and treachery among the Israelites. “The nobles of Judah sent many letters unto Tobiah, and the letters of Tobiah came unto them. For there were many in Judah sworn unto him, because he was the son-in-law of Shechaniah.” Here are seen the evil results of intermarriage with idolaters. A family of Judah had become connected with the enemies of God, and the relation had proved a snare. Many others had done the same. These, like the mixed multitude that came up with Israel from Egypt, were a source of constant trouble. They were not wholehearted in His service; and when God's work demanded a sacrifice, they were ready to violate their solemn oath of co- operation and support. PK 657.2"
"And the mixt multitude that was among them fell a lusting: and the children of Israel also wept again, and said, Who shall give us flesh to eat?"
EGW draws a parallel between the 'mixed multitude' in Numbers and those intermarried with idolaters in Nehemiah's time, both causing trouble and lacking wholehearted devotion. The connection is thematic, not a direct quote or explicit allusion.