Daniel 1:21

“And Daniel continued, etc.] In Babylon, and at court there, and in the favour of Nebuchadnezzar and his successors: even unto the first year of King Cyrus: by whom Babylon was taken, and when the seventy years’ captivity of the Jews were at an end; which time Daniel was there, for the sake of observing which this is mentioned: not that Daniel died in the first year of Cyrus; or went from Babylon with the rest of the Jews to Jerusalem upon the proclamation of Cyrus, as Jacchiades thinks; for we hear of him at the river Hiddekel, in the third year of Cyrus, (<271001>Daniel 10:1,4), but he was till this time in the court of the kings of Babylon; and afterwards in the courts of the kings of…”

“Daniel continued . . . unto . . . first year of Cyrus-- (Ch2 36:22; Ezr 1:1). Not that he did not continue beyond that year, but the expression is designed to mark the fact that he who was one of the first captives taken to Babylon, lived to see the end of the captivity. See my Introduction, "SIGNIFICANCE OF THE BABYLONIAN CAPTIVITY." In Dan 10:1 he is mentioned as living "in the third year of Cyrus." See Margin Note, on the use of "till" (Psa 110:1, Psa 112:8). Next: Daniel Chapter 2”

“And Daniel continued even unto the first year of king Cyrus - When the proclamation was issued by him to rebuild the temple at Jerusalem, Ezra 1:1. That is, he continued in influence and authority at different times during that period, and, of course, during the whole of the seventy years captivity. It is not necessarily implied that he did not “live” longer, or even that he ceased then to have influence and authority at court, but the object of the writer is to show that, during that long and eventful period, he occupied a station of influence until the captivity was accomplished, and the royal order was issued for rebuilding the temple. He was among the first of the captives that were…”

“Continued - in the court of Babylon until Cyrus, and then he was in the Persian court, and he lived in honour and high employment all that time, yea, after Cyrus began to reign. For Dan 10:1, he had visions and revelations in the third year of Cyrus. Next: Daniel Chapter 2”

“1:21 the first year of the reign of King Cyrus: Cyrus the Great ruled over Persia (559–530 BC), Media (from 549 BC), and Babylon (from 539 BC). He thus created the Persian Empire (539–331 BC; see study notes on 5:30, 31; cp. Isa 45:1-2).”

“Dan 6:28, Dan 10:1 "He lived to see that glorious time of the return of his people from the Babylonia captivity, though he did not die then. So till is used Psa 110:1, Psa 112:8. Next: Daniel Chapter 2”