Israel was not dwelling in safety either in 70 AD when a invasion and seige came. They are not in safety today so a time is to come when they will believe they are in a time of peace.
15 Because you have said, "We have made a pact. The overwhelming scourge will not reach us when it passes by, for we have made falsehood our refuge and we have concealed ourselves with deception."
18 And your covenant with death shall be cancelled, and your pact with Sheol shall not stand; when the overwhelming scourge passes through, then you will become its trampling place. (Isaiah 28:15,18)
The, when they say peace and safety...
8 After many days you will be summoned; in the latter years you will come into the land that is restored from the sword, whose inhabitatnts have been gathered from many nations to the mountains of Israel which had been a continual waste; but its people were brought out from the nations, and THEY ARE LIVING SECURELY, all of them.
9 And you will go up, you will come like a storm; you will be like a cloud covering the land, you and your troops, and many people with you.
10 ‘Thus says the Lord God, “It will come about on that day, that thoughts will come into your mind and you will devise an evil plan,
11 and you will say, ‘I will go up against the land of unwalled villages. I will go against those WHO ARE AT REST, THAT LIVE SECURELY, all of them living without walls and having no bars or gates,
12 to capture spoil and to seize plunder, to turn your hand against the waste places which are now inhabited, and against the people who are gathered from the nations, who have acquired cattle and goods, who live at the center of the world.’ (Ezekiel 38:8-11)