maybe they read the law of Moses and curses for breaking it ? And how God told them this in thier law
“But if ye will not hearken unto me, and will not do all these commandments; and if ye shall despise my statutes, or if your soul abhor my judgments, so that ye will not do all my commandments,
but that ye break my covenant:
I also will do this unto you; I will even appoint over you terror, consumption, and the burning ague, that shall consume the eyes, and cause sorrow of heart: and ye shall sow your seed in vain, for your enemies shall eat it. And I will set my face against you, and ye shall be slain before your enemies: they that hate you shall reign over you; and ye shall flee when none pursueth you.
And if ye will not yet for all this hearken unto me, then I will punish you seven times more for your sins. And I will break the pride of your power; and I will make your heaven as iron, and your earth as brass: and your strength shall be spent in vain: for your land shall not yield her increase, neither shall the trees of the land yield their fruits.
And if ye walk contrary unto me, and will not hearken unto me; I will bring seven times more plagues upon you according to your sins.
I will also send wild beasts among you, which shall rob you of your children, and destroy your cattle, and make you few in number; and your high ways shall be desolate.
And if ye will not be reformed by me by these things, but will walk contrary unto me; then will I also walk contrary unto you, and will punish you yet seven times for your sins.
And I will bring a sword upon you, that shall avenge the quarrel of my covenant: and when ye are gathered together within your cities, I will send the pestilence among you; and ye shall be delivered into the hand of the enemy.
And when I have broken the staff of your bread, ten women shall bake your bread in one oven, and they shall deliver you your bread again by weight: and ye shall eat, and not be satisfied.
And if ye will not for all this hearken unto me, but walk contrary unto me; then I will walk contrary unto you also in fury; and I, even I, will chastise you seven times for your sins.
And ye shall eat the flesh of your sons, and the flesh of your daughters shall ye eat. And I will destroy your high places, and cut down your images, and cast your carcases upon the carcases of your idols, and my soul shall abhor you.
And I will make your cities waste, and bring your sanctuaries unto desolation, and I will not smell the savour of your sweet odours. And I will bring the land into desolation: and your enemies which dwell therein shall be astonished at it.
And I will scatter you among the heathen, and will draw out a sword after you: and your land shall be desolate, and your cities waste.”
Leviticus 26:14-33 KJV
“And the burden of the LORD shall ye mention no more: for every man's word shall be his burden; for ye have perverted the words of the living God, of the LORD of hosts our God. …..therefore, behold, I, even I, will utterly forget you, and I will forsake you, and the city that I gave you and your fathers, and cast you out of my presence: and I will bring an everlasting reproach upon you, and a perpetual shame, which shall not be forgotten.”
Jeremiah 23:36, 39-40 KJV
“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! Behold, your house is left unto you desolate.”
Matthew 23:37-38 KJV
“Therefore will I number you to the sword, and ye shall all bow down to the slaughter: because when I called, ye did not answer; when I spake, ye did not hear; but did evil before mine eyes, and did choose that wherein I delighted not. And ye shall leave your name for a curse unto my chosen: for the Lord GOD shall slay thee, and call his servants by another name:”
Isaiah 65:12, 15 KJV
“Hear ye this word which I take up against you, even a lamentation, O house of Israel. The virgin of Israel is fallen; she shall no more rise: she is forsaken upon her land; there is none to raise her up. For thus saith the Lord GOD; The city that went out by a thousand shall leave an hundred, and that which went forth by an hundred shall leave ten, to the house of Israel. For thus saith the LORD unto the house of Israel, Seek ye me, and ye shall live: Seek the LORD, and ye shall live;
lest he break out like fire in the house of Joseph, and devour it, and there be none to quench it in Beth-el. Ye who turn judgment to wormwood, and leave off righteousness in the earth,”
Amos 5:1-4, 6-7
“But they made light of it, and went their ways, one to his farm, another to his merchandise: and the remnant took his servants, and entreated them spitefully, and slew them. But when the king heard thereof, he was wroth: and he sent forth his armies, and destroyed those murderers, and burned up their city.
Then saith he to his servants, The wedding is ready, but they which were bidden were not worthy.
Go ye therefore into the highways, and as many as ye shall find, bid to the marriage.”
Matthew 22:5-9 KJV