The vision you saw was a symbol of the outward physical consciousness obscured by the ordinary movements (clouds), but with the spirituality (the moon) still spreading its light everywhere from behind the ordinary human ignorance. The dog indicates something in the physical (the part that is faithful, obedient etc.) waiting confidently for the Light to come. The separate images are very usual symbols of the inner experiences.
Aspire always for the mind and psychic being to be filled with the true consciousness and experience and made ready. You must aspire especially for quietness, peace, a calm faith, an increasing steady wideness, for more and more knowledge, for a deep and intense but quiet devotion.
Do not be troubled by your surroundings and their opposition. These conditions are often imposed at first as a kind of ordeal. If you remain tranquil and undisturbed and continue your sadhana without allowing yourself to be inwardly troubled under these circumstances, it will help to give a much needed strength; for the path of yoga is always beset with inner and outer difficulties and the sadhak must develop a quiet, firm and solid strength to meet them.
Onward he passed to a diviner sphere:
There, joined in a common greatness, light and bliss,
Forgetting their difference and their separate reign
Became a single multitudinous whole.
Above the parting of the roads of Time,
Above the Silence and its thousandfold Word,
In the immutable and inviolate Truth
For ever united and inseparable,
The radiant children of Eternity dwell
On the wide spirit height where all are one.