'Whence' in the Bible

The burden of the beasts of the south. Into a land of adversity and distress, Of young lion and of old lion, Whence are viper and flying saraph, They carry on the shoulder of asses their wealth, And on the hump of camels their treasures, Unto a people not profitable.

And Isaiah the prophet cometh in unto king Hezekiah, and saith unto him, 'What said these men? and whence come they unto thee?' And Hezekiah saith, 'From a land afar off they have come unto me -- from Babylon.'

And thou hast said in thy heart: 'Who hath begotten for me -- these? And I bereaved and gloomy, A captive, and turned aside, And these -- who hath nourished? Lo, I -- I was left by myself, these -- whence are they?