'Four' in the Bible

The leech has two daughters: "Give" and "Give". Three things will never be satisfied; four will never say "Enough" -

Three things cause wonder for me; four are beyond my understanding:

Under three things the earth trembles, under four it cannot remain steady:

Four things on earth are small, but they are very, very wise:

Three things are stately in procession, four which are stately in their gait: