"Chapter 55—Heathen Plots This chapter is based on Nehemiah 6 . Sanballat and his confederates dared not make open war upon the Jews; but with increasing malice they continued their secret efforts to discourage, perplex, and injure them. The wall about Jerusalem was rapidly approaching completion. When it should be finished and its gates set up, these enemies of Israel could not hope to force an entrance into the city. They were the more eager, therefore, to stop the work without further delay. At last they devised a plan by which they hoped to draw Nehemiah from his station, and while they had him in their power, to kill or imprison him. PK 653"
"Now it came to pass, when Sanballat, and Tobiah, and Geshem the Arabian, and the rest of our enemies, heard that I had builded the wall, and that there was no breach left therein; (though at that time I had not set up the doors upon the gates;) That Sanballat and Geshem sent unto me, saying, Come, let us meet together in some one of the villages in the plain of Ono. But they thought to do me mischief. And I sent messengers unto them, saying, I am doing a great work, so that I cannot come down: why should the work cease, whilst I leave it, and come down to you? Yet they sent unto me four times after this sort; and I answered them after the same manner."
The EGW passage explicitly states that the chapter is based on Nehemiah 6 and summarizes the plot of Sanballat and his confederates against Nehemiah, directly referencing the biblical narrative.