"In vision Zechariah heard the angel of the Lord inquiring, “O Lord of hosts, how long wilt Thou not have mercy on Jerusalem and on the cities of Judah, against which Thou hast had indignation these threescore and ten years? And the Lord answered the angel that talked with me,” Zechariah declared, “with good words and comfortable words. PK 580.1"
"Then the angel of the Lord answered and said, O Lord of hosts, how long wilt thou not have mercy on Jerusalem and on the cities of Judah, against which thou hast had indignation these threescore and ten years?"
EGW directly quotes Zechariah 1:12, making this a clear and explicit allusion.
"And the Lord answered the angel that talked with me with good words and comfortable words."
EGW directly quotes Zechariah 1:13, making this a clear and explicit allusion.
"“So the angel that communed with me said unto me, Cry thou, saying, Thus saith the Lord of hosts; I am jealous for Jerusalem and for Zion with a great jealousy. And I am very sore displeased with the heathen that are at ease: for I was but a little displeased, and they helped forward the affliction. Therefore thus saith the Lord; I am returned to Jerusalem with mercies: My house shall be built in it, ... and a line shall be stretched forth upon Jerusalem.” Zechariah 1:12-16 . PK 580.2"
"Then the angel of the Lord answered and said, O Lord of hosts, how long wilt thou not have mercy on Jerusalem and on the cities of Judah, against which thou hast had indignation these threescore and ten years? And the Lord answered the angel that talked with me with good words and comfortable words. So the angel that communed with me said unto me, Cry thou, saying, Thus saith the Lord of hosts; I am jealous for Jerusalem and for Zion with a great jealousy. And I am very sore displeased with the heathen that are at ease: for I was but a little displeased, and they helped forward the affliction. Therefore thus saith the Lord; I am returned to Jerusalem with mercies: my house shall be built in it, saith the Lord of hosts, and a line shall be stretched forth upon Jerusalem."
Ellen White directly references Zechariah 1:12-16 in this passage.
"The prophet was now directed to predict, “Thus saith the Lord of hosts; My cities through prosperity shall yet be spread abroad; and the Lord shall yet comfort Zion, and shall yet choose Jerusalem.” Verse 17 . PK 580.3"
"Cry yet, saying, Thus saith the Lord of hosts; My cities through prosperity shall yet be spread abroad; and the Lord shall yet comfort Zion, and shall yet choose Jerusalem."
EGW directly quotes Zechariah 1:17.