Can you tell us why the archangels are given those titles? I know you said Gabriel's title was too spoilery to reveal yet but I was wondering about the others.
God’s top two/primary archangels were given the titles the Left and Right Hand of God. The Left Hand is the punishing hand, the forceful one and the war leader (Gabriel).
Michael, as the Right Hand of God, is the more open palm, the poster boy. The Defender of Faith is given to him in concordance with his other title. He protects Heaven and the faithful, the counterpart to the Wrath of God.
Israfel is the most diplomatic of archangels, the one who is sent to parlay and negotiate with others. His healing skills have also garnered him the title of the Grace of God, for when he walks among the sick and dying, the are restored, ‘by God’s Grace.’
Sarethiel is an enigma who has delved deeply into how Heaven works. Because of their mysterious behavior and knowledge of most secrets, they have the title the Keeper of Secrets. Their second title, the Silencer, refers to the fact that those who speak ill of Heaven often disappear or go quiet after a visit from Sarethiel.
Hanael is the Herald of Heaven. As the youngest archangel, she doesn’t have a lot of feats to her name. She is loud and boisterous in her piety, and she inspires others and is often given the task of delivering news–hence she is the Herald of Heaven.
Auriel is the Flaming Sword and the Redeemer. Auriel likes to use Holy Fire on her Angel Blade, and it’s become a trademark of hers. She is also called the Redeemer because she once turned the tide of a battle by convincing a Fallen to remember where they came from. The Fallen was killed, but the title stuck.
Raphael is the Guardian of the Gates and the Voice of God. Raphael will often convey God’s word to others, working more in Heaven than elsewhere. as the archangel most in Heaven, Raphael is also considered the last defense of sorts, the archangel who will meet any oppositional force at the gates.
Ramiel was the Guide and the Eyes of God.He would help guide younger angels and souls entering Heaven. As he often went to earth, more so than any other archangels, he was viewed as God’s eyes on earth, letting God see what was occurring.