'Sides' in the Bible

For he had dominion over all the region on this side the River, from Tiphsah even to Gaza, over all the kings on this side the River: and he had peace on all sides round about him.

And Elijah came near unto all the people, and said, How long go ye limping between the two sides? if Jehovah be God, follow him; but if Baal, then follow him. And the people answered him not a word.