Sat-Chit-Ananda is a triple consciousness. Sat is existence, Chit is consciousness and Ananda is bliss. You can separate them if you want to and, at the same time, you can take them as one. If one achieves Existence, then inside Existence he has Consciousness itself. And if one has Consciousness, then Bliss is there. It is like an apartment or plot of land. You can give the plot of land one name or, if you want to divide it, each part of the plot can be called by a different name. But the reality of one is bound to be found in the other. They complement one another. So you can either separate them or keep them as one.
Sat-Chit-Ananda is the triple consciousness on the highest plane, and that plane is for the absolutely chosen few. To reach Sat-Chit-Ananda is a most difficult thing. Hardly twenty or thirty Masters have reached it and stayed at that plane, and hardly one or two can embody it. Some Masters have reached that plane and immediately came down because it was too high for them. It is much easier for people to reach the illumined mind or the Supermind, but Sat-Chit-Ananda is absolutely the highest. That consciousness is almost impossible to attain, even for the spiritual Masters. (God, Avatars and Yogis)
To be sure, the Kingdom of Heaven is more than just a mere plane, like other planes. It is a plane of divine Consciousness. It is a state of Realisation. It embodies Sat-Chit-Ananda. Sat is divine Existence, Chit is divine Consciousness, Ananda is divine Bliss. When we go deep within we feel these three together, and when we acquire the inner vision to perceive them all at once, we live verily in the Kingdom of Heaven. Otherwise, Existence is at one place, Consciousness is somewhere else and Bliss is nowhere near the other two. When we see and feel Existence-Consciousness-Bliss on the selfsame plane, each complementing and fulfilling the others, we can say that we live in the Kingdom of Heaven. Yes, the Kingdom of Heaven is within us. Not only can we feel it, but without the least possible doubt, we can become it.
by Sri Chinmoy