"The enemy will invent every device in his power to prevent the light from shining in new places. He does not want the truth to go forth “as a lamp that burneth.” Will our brethren consent that he shall succeed in his plans for hindering the work? 6T 481.1"
"Neither do men light a candle, and put it under a bushel, but on a candlestick; and it giveth light unto all that are in the house."
Both passages discuss the importance of spreading light/truth and the opposition one might face in doing so. The EGW passage uses the imagery of a burning lamp, echoing the sentiment of Matthew 5:15.
"Time is rapidly passing into eternity. Will any now keep back from God that which is strictly His own? Will any refuse Him that which, though it may be given without merit, cannot be denied without ruin? The Lord has given to every man his work, and the holy angels want us to be doing that work. As you shall watch and pray and work, they stand ready to co-operate with you. When the understanding is worked upon by the Holy Spirit, then all the affections act harmoniously in compliance with the divine will. Then men will give to God His own, saying: “All things come of Thee, and of Thine own we freely give Thee.” May God forgive His people that they have not done this. 6T 481.2"
"But who am I, and what is my people, that we should be able to offer so willingly after this sort? for all things come of thee, and of thine own have we given thee."
The EGW passage directly quotes 1 Chronicles 29:14, making it an explicit allusion.
"Brethren and sisters, I have tried to set things before you as they are, but the attempt falls far short of the reality. Will you refuse my plea? It is not I who appeal to you; it is the Lord Jesus, who has given His life for the world. I have but obeyed the will, the requirement, of God. Will you improve the opportunity of showing honor to God's work and respect for the servants whom He has sent to do His will in guiding souls to heaven? 6T 481.3"
"Now then we are ambassadors for Christ, as though God did beseech you by us: we pray you in Christ’s stead, be ye reconciled to God."
Both passages deal with the idea of being a messenger or representative of God, urging people to reconcile with Him. The EGW passage speaks of obeying God's will and guiding souls to heaven, while 2 Corinthians 5:20 speaks of being ambassadors for Christ.
“But this I say, He which soweth sparingly shall reap also sparingly; and he which soweth bountifully shall reap also bountifully. Every man according as he purposeth in his heart, so let him give; not grudgingly, or of necessity: for God loveth a cheerful giver. And God is able to make all grace abound toward you; that ye, always having all sufficiency in all things, may abound to every good work: (as it is written, He hath dispersed abroad; he hath given to the poor: his righteousness remaineth forever. Now He that ministereth seed to the sower both minister bread for your food, and multiply your seed sown, and increase the fruits of your righteousness;) being enriched in everything to all bountifulness, which causeth through us thanksgiving to God. For the administration of this service not only supplieth the want of the saints, but is abundant also by many thanksgivings unto God; whiles by the experiment of this ministration they glorify God for your professed subjection unto the g…
"But this I say, He which soweth sparingly shall reap also sparingly; and he which soweth bountifully shall reap also bountifully. Every man according as he purposeth in his heart, so let him give; not grudgingly, or of necessity: for God loveth a cheerful giver. And God is able to make all grace abound toward you; that ye, always having all sufficiency in all things, may abound to every good work: (As it is written, He hath dispersed abroad; he hath given to the poor: his righteousness remaineth for ever. Now he that ministereth seed to the sower both minister bread for your food, and multiply your seed sown, and increase the fruits of your righteousness;) Being enriched in every thing to all bountifulness, which causeth through us thanksgiving to God. For the administration of this service not only supplieth the want of the saints, but is abundant also by many thanksgivings unto God; Whiles by the experiment of this ministration they glorify God for your professed subjection unto the gospel of Christ, and for your liberal distribution unto them, and unto all men; And by their prayer for you, which long after you for the exceeding grace of God in you. Thanks be unto God for his unspeakable gift."
Ellen White directly references 2 Corinthians 9:6-15 in this passage.
"But this I say, He which soweth sparingly shall reap also sparingly; and he which soweth bountifully shall reap also bountifully."
The EGW passage directly quotes 2 Corinthians 9:6 and continues to quote several verses from the same chapter, making it an explicit allusion.