'Sides' in the Bible

containing the golden incense altar and the ark of the covenant covered on all sides with gold, in which [were] a golden jar containing the manna and the rod of Aaron that budded and the tablets of the covenant.

in the middle of its street, and {on both sides of the river} [is] the tree of life, producing twelve fruits--yielding its fruit according to every month--and the leaves of the tree [are] for the healing of the nations.