And they have established this,xixBT’Eiruvin 18b about the dove: for it says: (Gen. 8:11)... and behold, it had torn-off an olive leaf with its mouth... And why an olive leaf? But the dove said: ‘Master of the Worlds! May my sustenance be delivered by Your hand, though it be bitter like an olive, and let it not be delivered by a messenger though it be sweet’, and ‘the messenger’ in this instance is Metatron.
And furthermore, the Shekhinah is called: ‘the prayer of the Passover’ from the right-hand side, ‘the prayer of New Year’ from the left-hand side, ‘the prayer of the Festival of Shavu’ot’ Weeks from the aspect of the Middle. YQV”Q is in every place to receive Her. [and to prepare weapons of war]