'Heavier' in the Bible

Let heavier work be laid upon the men, that they may labor therein; and let them not regard lying words.

For now it would be heavier than the sand of the seas: Therefore have my words been rash.

Even to-day is my complaint rebellious: My stroke is heavier than my groaning.

A stone is heavy, and the sand weighty; But a fool's vexation is heavier than they both.