"“You have lost the sanctifying influence of the truth. You have lost your connection with the heavenly host. You have allied yourself with the first great rebel, and God's wrath is upon you; for His sacred cause is reproached, and the truth is made disgusting to unbelievers. You have grieved God's people, and despised the counsel of His ambassadors upon earth, who labor together with Him, and are in Christ's stead beseeching souls to be reconciled to God. 1T 360.1"
"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."
The EGW passage directly uses the phrase "ambassadors upon earth, who labor together with Him, and are in Christ's stead beseeching souls to be reconciled to God." This is a clear allusion to 2 Corinthians 5:20, which speaks of being "ambassadors for Christ" and beseeching people to "be ye reconciled to God."
"Of how much sorer punishment, suppose ye, shall he be thought worthy, who hath trodden under foot the Son of God, and hath counted the blood of the covenant, wherewith he was sanctified, an unholy thing, and hath done despite unto the Spirit of grace?"
Both passages deal with rejecting God's grace and suffering the consequences. Hebrews 10:29 speaks of trampling the Son of God underfoot and doing despite to the Spirit of grace, while EGW speaks of losing the sanctifying influence of truth and allying with the 'first great rebel.' The connection is thematic, dealing with apostasy and its consequences.
"And the great dragon was cast out, that old serpent, called the Devil, and Satan, which deceiveth the whole world: he was cast out into the earth, and his angels were cast out with him."
EGW explicitly mentions allying with the 'first great rebel,' which is a clear reference to Satan. Revelation 12:9 identifies Satan as the 'great dragon...that old serpent, called the Devil.' This is more than a thematic parallel; it's a direct allusion to the biblical figure of Satan.
"“I was shown that as a people we cannot be too careful what influence we exert; we should watch every word. When we by word or act place ourselves upon the enemy's battle ground, we drive holy angels from us, and encourage and attract evil angels in crowds around us. This you have done, Brother A, and by your unguarded, willful course have caused unbelievers to look upon Sabbathkeepers all around you with suspicion. These words were presented before me as referring to the servants of God: ‘He that heareth you heareth Me; and he that despiseth you despiseth Me; and he that despiseth Me despiseth Him that sent Me.’ May God help you, my deceived brother, to see yourself as you are, and to have your sympathies with the body.” 1T 360.2"
"He that heareth you heareth me; and he that despiseth you despiseth me; and he that despiseth me despiseth him that sent me."
EGW directly quotes Luke 10:16 within her text, applying it to the servants of God. This is a clear and intentional allusion.