'Seventy' in the Bible

in [the] first year [of] his kingship I, Daniel, observed in the scrolls the number of the years that it was [that were] to be fulfilled [according to] [the] word of Yahweh to Jeremiah the prophet for the devastation of Jerusalem--seventy years.

"Seventy weeks is decreed for your people and {for your holy city}, to put an end to the transgression and to seal [up] sin and to make atonement for guilt and to bring [in] everlasting righteousness and to seal vision and prophet and to anoint {the most holy place}.