'Suddenly' in the Bible

Then suddenly there appeared with the angel a multitude of the heavenly host (angelic army) praising God and saying,

and a spirit seizes him, and suddenly he cries out, and it throws him into a convulsion so that he foams at the mouth; and only with [great] difficulty does it leave him, mauling and bruising him as it leaves.

“But be on guard, so that your hearts are not weighed down and depressed with the giddiness of debauchery and the nausea of self-indulgence and the worldly worries of life, and then that day [when the Messiah returns] will not come on you suddenly like a trap;

While they were perplexed and wondering about this, suddenly, two men in dazzling clothing stood near them;