And it should not be forgotten also, that there is the same tendency on the part of God, a tendency which his holy nature renders necessary and invariable, to enter into this intimate union. No matter how inferior holy beings may be; they may be mere insects in capacity; still the holy heart of God loves them, seeks them, becomes one with them. In a very important sense, inasmuch as their holiness cannot be regarded as self-originated, they are a part of himself by their very nature. Hence the doctrine, so distinctly and strikingly laid down in the writings of Dr. Cudworth. Speaking of holiness, he says,
If it be but hearty and sincere, it can no more be cut off and discontinued from God, than a sunbeam here upon earth can be broken off from its intercourse with the sun, and be left alone amidst the mire and dirt of this lower world. Holiness is something of God, wherever it is. It is an efflux from Him, that always hangs upon him and lives in him; as the sunbeams, although they gild this lower world, and spread their golden wings over us, yet they are not so much here, where they shine, as in the sun, from whence they flow.
The necessity of this union on the part of holy beings, and on the part of God, as well as on the part of other holy beings, seems to me to be clearly implied in that beautiful passage of Scripture, "God is LOVE, and he, that dwelleth in love, dwelleth in God, and God in him."
— edited from The Interior or Hidden Life (2nd edition, 1844) Part 3, Chapter 13.