Frank J. Wilstach, comp. A Dictionary of Similes. 1916.

United

United, as flesh and soul in man.
—Philip James Bailey

United as the good thoughts that dwell in the same soul.
—Maurice Maeterlinck

United, like a hook and eye.
—Sydney Munden

In harmony united,
Like guests that meet, and some from far,
By cordial love invited.
—William Wordsworth