'Unique' in the Bible

“But He is unique and who can turn Him?And what His soul desires, that He does.

But my dove, my perfect one, is unique:She is her mother’s only daughter;She is the pure child of the one who bore her.The maidens saw her and called her blessed,The queens and the concubines also, and they praised her, saying,

“Thus says the Lord God, ‘A disaster, unique disaster, behold it is coming!

For it will be a unique day which is known to the Lord, neither day nor night, but it will come about that at evening time there will be light.