Friend, Jerusalem fell precisely BECAUSE the Old Covenant was a valid contract unto AD 70 (Matt 5:17-18). From AD 66-70, the city of Jerusalem fell under the powerful curses outlined in Lev 26 and Deut 28! If that old covenant was no longer extant, Jerusalem wouldn't have fallen under the curses prescribed in Lev 26 and Deut 28.
"Valid contract" until 70AD? LOL. Show us the Scripture where it said this.
No...
The Old Covenant with the physical city and the temple as a representation has ALREADY expired when Christ died. The stones of the builder in Matthew 24:1-2 is not physical stones but represents the people of the congregation!
Matthew 23:37-38
[37]
O Jerusalem, Jerusalem, thou that killest the prophets, and
stonest them which are sent unto thee, how often would
I have gathered thy children together, even as a hen gathereth her chickens under her wings, and
ye would not!
[38]
Behold, your house is left unto you desolate.
The physical city did not kill the prophets. Jerusalem "WAS" a BODY of Christ, the people of the Prince, who have come and destroy him. It is THEM who have been judged for rejected their Messiah the Prince. THe children are people of the congregation. So they are desolate. The kingdom was taken from them and gave to another. NO physical destruction is needed!
Matthew 21:42-43
[42] Jesus saith unto them, Did ye never read in the scriptures, The
stone which the builders rejected, the
same is become the head of the corner: this is the Lord's doing, and it is marvellous in our eyes?
[43] Therefore say I unto you,
The kingdom of God shall be taken from you, and given to a nation bringing forth the fruits thereof.
The builders were the people of the congregation who were working in a SPIRITUAL kingdom that their physical city, temple, and sacrifice SIGNIFIES OF! Because they (Jews) rejected their Messiah the Prince, the kingdom was taken from them SPIRITUALLY, and gave to a
holy nation that brings forth the fruits, SPIRITUALLY, which is the CHURCH! Therefore the old covenant ended and the new covenant anew! No need for physical destruction of city or temple.
1 Peter 2:6-10
[6] Wherefore also it is
contained in the scripture, Behold,
I lay in Sion a chief corner stone, elect, precious: and
he that believeth on him shall not be confounded.
[7] Unto you therefore which believe he is precious: but unto them which be disobedient,
the stone which the builders disallowed, the
same is made the head of the corner,
[8] And a stone of stumbling, and a rock of offence, even to them which stumble at the word, being disobedient: whereunto also they were appointed.
[9] But
ye are a chosen generation, a royal priesthood, an holy nation, a peculiar people; that ye should shew forth the praises of him who hath called you out of darkness into his marvellous light:
[10] Which in time
past were not a people, but are now the people of God: which had
not obtained mercy, but now have obtained mercy.
This was the fall of the old covenant where builders (Jews) disallowed the Messiah, the same one that becomes the head of NEW temple building which is spiritual in nature through the church. Who is that holy nation that the kingdom was given to? The Church, of course, where Gentiles were once not people of God in the Old Covenant, but can be included under New Covenant in Christ!
With all the talking Jerusalem in 70AD did not get it. The doctrine concerning 70AD is man-made false doctrine because like the Dispensationalists, who are holding on to Jewish fables thinking that the physical temple was still "holy" or "valid" between the cross and 70AD despite the fact that the veil of the temple was rent the moment Christ, the stone which the builders disallowed, died. Their temple and city that represented Christ's body at that time was already destroyed:
Daniel 9:26
[26] And after threescore and two weeks shall
Messiah be cut off, but not for himself: and the
people of the prince that shall come shall destroy the city and the sanctuary; and the end thereof shall be with a flood, and unto the
end of the war desolations are determined.