A seventy yr "1000 yrs" is just silly. As I have discussed before Christ was speaking of the generation of the earth or creation like in Gen 2, and not man. So we have Him saying He will return in this generation, rather than the regeneration.
In my opinion, "generation" has nothing to do with "the generation of the earth."
Moses prophesied about the latter days generation. He told the nation of Israel about her end just before she entered the promised land.
"For I know that after my death you will become utterly corrupt, and turn aside from the way which I have commanded you. And evil will befall you in the latter days, because you will do evil in the sight of the LORD, to provoke Him to anger through the work of your hands. (Deuteronomy 31:29 NKJV)
He taught Israel a song to pass down to subsequent generations.
"Then Moses spoke in the hearing of all the assembly of Israel the words of this song until they were ended" (Deuteronomy 31:30 NKJV)
As he finished he gave them the purpose for this song.
"and he said to them: Set your hearts on all the words which I testify among you today, which you shall command your children to be careful to observeall the words of this law. For it is not a futile thing for you, because it is your life, and by this word you shall prolong your days in the land which you cross over the Jordan to possess. (Deuteronomy 32:46, 47 NKJV)
Moses gave three key characteristics of the latter days generation of Old Covenant Israel, they are: Perverse, Crooked, and Faithless or "Children in whom is no faith."
They have corrupted themselves; They are not His children, Because of their blemish: A perverse and crooked generation."
"And He said: I will hide My face from them, I will see what their end will be, For they are a perverse generation, Children in whom is no faith." (Deuteronomy 32:5, 20 NKJV)
This phrasing is not found in Scripture until the arrival of Messiah:
"Then Jesus answered and said, O faithless and perverse generation, how long shall I be with you? How long shall I bear with you? Bring him here to Me. (Matthew 17:17 NKJV)
Peter continued Jesus' theme and left no doubt that he and his audience were living in the time of Israel's latter days.
"And with many other words he testified and exhorted them, saying, Be saved from this perverse generation. (Acts 2:40 NKJV)
If one cannot recognize the fact that the first century AD was the terminal generation they simply haven't considered Paul's admonition:
"that you may become blameless and harmless, children of God without fault in the midst of a crooked and perverse generation, among whom you shine as lights in the world" (Philippians 2:15 NKJV)
There is no question about the fact that Jesus' incarnation coincided with the prophecy of Moses regarding Israel's last days. God then raised up the inspired apostles to proclaim the gospel to the entire Roman world before the end arrived.