Daniel 1:21
And Daniel continued even unto the first year of king Cyrus.
Cross-reference
Daniel 6:28
Historical context
Daniel 6:28 confirms Daniel prospered into Cyrus's reign, matching the timeline given in Daniel 1:21.
Daniel 9:1
Historical context
Daniel 9:1 dates the prophecy to Darius's first year, which precedes Cyrus, extending the timeline from Daniel 1:21.
Daniel 10:1
Historical context
Daniel 10:1 places Daniel receiving a vision in Cyrus's third year, extending the timeline from Daniel 1:21.