He made Existence His Spread Parchment (Riqq Manshur) 1. And the Heaven His Raised Canopy, and Space His Swelling Sea (Bahr Masjur) 2.
All of that is an indication of the Reality of the Existence of Lordship, and a proof of the permanence of Pre-eternity (Azaliyya) and the existence of Eternity (Sarmadiyya).
So His Manifestation in Humanity was Justice3 from Him and Equity, "so that mankind would have no argument against Allah after the messengers."
So He spoke through the human, manifested miracles and power (Qadar), and guided them to His Essence via His Names and Attributes.
His Manifestation was Power.
His Speech was Wisdom.
His Indication to His Essence was Mercy.
His Occultation was Greatness.
Footnotes
1"He made Existence—External or General—His Spread Parchment":An indication of the Luminous Form on the Night of Perfection (Full Moon).Riqq in the language is the White Page.
2"And the Heaven His Raised Canopy":The Heaven is a Chain (Salsal) possessing the Radiant Look (Nazra Diya'iyya).The Radiance (Diya') is the high "Raised Canopy" to be witnessed by the eyes."And Space His Swelling Sea": Meaning, filled with Planets and Stars (The People of Ranks and Purity).
3Our Master Al-Sadiq (Exalted be His Might) said:"His Manifestation was in the Muhammadan Dome (Al-Qubba al-Muhammadiyya) as Anza' Batin (The Bald and Stout One) to establish the Proof upon creation, so that they would not say: 'He called us to what we do not see, and appeared to us in what we do not know.' And this is the very essence of Justice."(Translator's Note: Anza' Batin is a physical description historically attributed to Imam Ali ibn Abi Talib, referring to a high forehead/receding hairline and a stout torso. In this esoteric context, it refers to the specific form of the Divine Manifestation).