'Side' in the Bible

They went to the entrance of Gedor, even to the east side of the valley, to seek pasture for their flocks.

and beyond the Jordan at Jericho, on the east side of the Jordan, [were given them], out of the tribe of Reuben, Bezer in the wilderness with its suburbs, and Jahzah with its suburbs,

Then the Spirit came on Amasai, who was chief of the thirty, [and he said], "We are yours, David, and on your side, you son of Jesse: peace, peace be to you, and peace be to your helpers; for your God helps you." Then David received them, and made them captains of the band.

On the other side of the Jordan, of the Reubenites, and the Gadites, and of the half-tribe of Manasseh, with all kinds of instruments of war for the battle, one hundred twenty thousand.

"Isn't Yahweh your God with you? Hasn't he given you rest on every side? For he has delivered the inhabitants of the land into my hand; and the land is subdued before Yahweh, and before his people.