Just like the Sun is fundamentally one in its essence, its rays changing in appearance upon passing through windowpanes of white, black, red, or green. And the sunlight changes according to the color of the glass.
And just as water with which an orchard is irrigated assumes the color of the flowers on which it falls.
This is why we need different paths: We need a garden full of different flowers: a Breslov flower and a Chabad flower and a Yemenite flower and a Chazon Ish flower...all misted and irrigated by the same Water of Wisdom.
The Jewish Nation becomes a 12-point prism through which Hashem's Light shines.