"Why not awake the voice of our spiritual songs in the travels of our pilgrimage? Why not come back to our simplicity and life of fervor? The reason why we are not more joyful is that we have lost our first love. Let us then be zealous and repent, lest the candlestick be moved out of its place. 6T 368.1"
"Nevertheless I have somewhat against thee, because thou hast left thy first love. Remember therefore from whence thou art fallen, and repent, and do the first works; or else I will come unto thee quickly, and will remove thy candlestick out of his place, except thou repent."
The EGW passage explicitly alludes to Revelation 2:4-5, referencing the loss of 'first love' and the threat of the 'candlestick' being removed.
"The temple of God is opened in heaven, and the threshold is flushed with the glory which is for every church that will love God and keep His commandments. We need to study, to meditate, and to pray. Then we shall have spiritual eyesight to discern the inner courts of the celestial temple. We shall catch the themes of song and thanksgiving of the heavenly choir round about the throne. When Zion shall arise and shine, her light will be most penetrating, and precious songs of praise and thanksgiving will be heard in the assemblies of the saints. Murmuring and complaining over little disappointments and difficulties will cease. As we apply the golden eyesalve we shall see the glories beyond. Faith will cut through the heavy shadow of Satan, and we shall see our Advocate offering up the incense of His own merits in our behalf. When we see this as it is, as the Lord desires us to see it, we shall be filled with a sense of the immensity and diversity of the love of God. 6T 368.2"
"After this I looked, and, behold, a door was opened in heaven: and the first voice which I heard was as it were of a trumpet talking with me; which said, Come up hither, and I will shew thee things which must be hereafter. And immediately I was in the spirit: and, behold, a throne was set in heaven, and one sat on the throne. And he that sat was to look upon like a jasper and a sardine stone: and there was a rainbow round about the throne, in sight like unto an emerald. And round about the throne were four and twenty seats: and upon the seats I saw four and twenty elders sitting, clothed in white raiment; and they had on their heads crowns of gold. And out of the throne proceeded lightnings and thunderings and voices: and there were seven lamps of fire burning before the throne, which are the seven Spirits of God. And before the throne there was a sea of glass like unto crystal: and in the midst of the throne, and round about the throne, were four beasts full of eyes before and behind. And the first beast was like a lion, and the second beast like a calf, and the third beast had a face as a man, and the fourth beast was like a flying eagle. And the four beasts had each of them six wings about him; and they were full of eyes within: and they rest not day and night, saying, Holy, holy, holy, Lord God Almighty, which was, and is, and is to come. And when those beasts give glory and honour and thanks to him that sat on the throne, who liveth for ever and ever, The four and twenty elders fall down before him that sat on the throne, and worship him that liveth for ever and ever, and cast their crowns before the throne, saying, Thou art worthy, O Lord, to receive glory and honour and power: for thou hast created all things, and for thy pleasure they are and were created."
The EGW passage echoes the imagery of Revelation 4, particularly the open door to heaven, the throne, and the heavenly choir. While not a direct quote, the themes of accessing the heavenly temple through spiritual insight and the presence of praise and thanksgiving strongly connect to the scene described in Revelation 4.
"God teaches that we should assemble in His house to cultivate the attributes of perfect love. This will fit the dwellers of earth for the mansions that Christ has gone to prepare for all who love Him. There they will assemble in the sanctuary from Sabbath to Sabbath, from one new moon to another, to unite in loftiest strains of song, in praise and thanksgiving to Him who sits upon the throne, and to the Lamb for ever and ever. 6T 368.3"
"And it shall come to pass, that from one new moon to another, and from one sabbath to another, shall all flesh come to worship before me, saith the Lord."
The EGW passage explicitly mentions assembling from Sabbath to Sabbath and from one new moon to another, directly echoing the language and concept of Isaiah 66:23 regarding worship before the Lord.
"In my Father’s house are many mansions: if it were not so, I would have told you. I go to prepare a place for you. And if I go and prepare a place for you, I will come again, and receive you unto myself; that where I am, there ye may be also."
The EGW passage directly references the concept of mansions prepared by Christ and connects it to cultivating love and assembling in God's house, which aligns with the core message of John 14:2-3.