In fact He didn't even instruct for prayers that their lives would be spared or for prayers to be prayed that the temple be preserved...
Just prayers that they did not have to flee on the Sabbath...in order that it may be kept...
Sabbath brought into not only the New Covenant as He demonstrates by His keeping it but into the future...after His ascension...
I said
And every one has a choice on whether or not they want to keep the Sabbath.
[Rom 14:1-4
1 Receive one who is weak in the faith, [but] not to disputes over doubtful things.
2 For one believes he may eat all things, but he who is weak eats [only] vegetables.
3 Let not him who eats despise him who does not eat, and let not him who does not eat judge him who eats; for God has received him.
4 Who are you to judge another's servant? To his own master he stands or falls. Indeed, he will be made to stand, for God is able to make him stand.
5 One person esteems [one] day above another; another esteems every day [alike]. Let each be fully convinced in his own mind.
6 He who observes the day, observes [it] to the Lord; and he who does not observe the day, to the Lord he does not observe [it]. He who eats, eats to the Lord, for he gives God thanks; and he who does not eat, to the Lord he does not eat, and gives God thanks.
7 For none of us lives to himself, and no one dies to himself.