'Instant' in the Bible

'And when the dead dieth beside him in an instant, suddenly, and he hath defiled the head of his separation, then he hath shaved his head in the day of his cleansing; on the seventh day he doth shave it,

'And if, in an instant, without enmity, he hath thrust him through, or hath cast at him any instrument, without lying in wait;

And as small dust hath been The multitude of those scattering thee, And as chaff passing on the multitude of the terrible, And it hath been at an instant -- suddenly.

Therefore is this iniquity to you as a breach falling, Swelled out in a wall set on high, Whose destruction suddenly, at an instant cometh.