Daniel 9:2

in the first year of his reign, I, Daniel, understood from the sacred books, according to the word of the Lord to Jeremiah the prophet, that the desolation of Jerusalem would last seventy years.

Note See Jeremiah 25:11–12 and Jeremiah 29:10.

BSB · Berean Standard Bible
In the first year of his reign I Daniel understood by books the number of the years, whereof the word of the Lord came to Jeremiah the prophet, that he would accomplish seventy years in the desolations of Jerusalem.
KJV · King James Version
in the first year of his reign I, Daniel, understood by the books the number of the years about which the Lord’s word came to Jeremiah the prophet for the accomplishing of the desolations of Jerusalem, even seventy years.

Note When rendered in ALL CAPITAL LETTERS, “Lord” or “God” is the translation of God’s Proper Name (Hebrew “יהוה”, usually pronounced Yahweh).

WEB · World English Bible
in the first year of his reign I, Daniel, understood by the books the number of the years whereof the word of Jehovah came to Jeremiah the prophet, for the accomplishing of the desolations of Jerusalem, even seventy years.
ASV · American Standard Version

Related passages

From the Treasury of Scripture Knowledge, grouped by the word they explain.

understood
Daniel 8:15, 16; Psalm 119:24, 99, 100; Matthew 24:15; Mark 13:14; Acts 8:34; 1 Timothy 4:13; 2 Timothy 3:15–17; 1 Peter 1:10–12; 2 Peter 1:19–21; Revelation 1:3
to Jeremiah
2 Chronicles 36:21; Jeremiah 25:11, 12; Jeremiah 27:7; Jeremiah 29:10; Zechariah 7:5
the desolations
Psalm 74:3–7; Psalm 79:1, 2; Isaiah 6:11, 12; Isaiah 24:10–12; Isaiah 64:10; Jeremiah 7:34; Jeremiah 25:18; Jeremiah 26:6, 18; Lamentations 1:1; Micah 3:12