'Bases' in the Bible

If the bases are broken down, what is the upright man to do?

Then trouble and shock came on the earth; and the bases of the mountains were moved and shaking, because he was angry.

Then the deep beds of the waters were seen, and the bases of the world were uncovered, because of your words of wrath, O Lord, because of the breath from your mouth.

He hath founded earth on its bases, It is not moved to the age and for ever.