"Joyfully they set out on their return. Simeon and Benjamin were with them, their animals were laden with grain, and all felt that they had safely escaped the perils that had seemed to surround them. But they had only reached the outskirts of the city when they were overtaken by the governor's steward, who uttered the scathing inquiry, “Wherefore have ye rewarded evil for good? Is not this it in which my lord drinketh, and whereby indeed he divineth? ye have done evil in so doing.” This cup was supposed to possess the power of detecting any poisonous substance placed therein. At that day cups of this kind were highly valued as a safeguard against murder by poisoning. PP 229.1"
"And when they were gone out of the city, and not yet far off, Joseph said unto his steward, Up, follow after the men; and when thou dost overtake them, say unto them, Wherefore have ye rewarded evil for good?"
The EGW passage directly quotes and elaborates on the Genesis verse, making the connection explicit.
"To the steward's accusation the travelers answered, “Wherefore saith my lord these words? God forbid that thy servants should do according to this thing: behold, the money, which we found in our sacks' mouths, we brought again unto thee out of the land of Canaan: how then should we steal out of thy lord's house silver or gold? With whomsoever of thy servants it be found, both let him die, and we also will be my lord's bondmen.” PP 229.2"
"Behold, the money, which we found in our sacks’ mouths, we brought again unto thee out of the land of Canaan: how then should we steal out of thy lord’s house silver or gold?"
The EGW passage directly quotes and paraphrases the brothers' defense in Genesis 44:8, specifically mentioning the return of the money found in their sacks. This is a clear and intentional allusion.