What did Peter think Daniel's 70th week meant for Christ's return?
Peter understood Daniel's 70th week as the prophetic program in which calamities would fall, then Christ would return, hinging on Israel's repentance. The times of refreshing and Kingdom could not come until the restitution of all things, or the Tribulation, had occurred. So Christ's return followed Israel's national repentance.
Les explains that Peter knew Daniel's 70th week was part of the prophetic program, where all these calamities would fall and then Christ would return. It all hinged on Israel's repentance. Peter expected that if Israel repented and was converted, their sins would be blotted out, bringing the times of refreshing—the Kingdom. But the Kingdom could not come until the restitution of all things, or the Tribulation. This follows the pattern of Psalm 2: they would reject the Messiah, put Him to death, God would call Him back to Heaven and set Him at His right hand until His enemies were made His footstool, and then would come wrath, vexation, and tribulation, followed by the King set upon the holy hill of Zion. God interrupted that flow, so after Israel rejected the first Advent, He sent salvation to the Gentiles by grace, with no connection to Israel's Law.