“וידו [וִידֵי] אָדָם מִתַּחַת כַּנְפֵיהֶם עַל אַרְבַּעַת רִבְעֵיהֶם וּפְנֵיהֶם וְכַנְפֵיהֶם לְאַרְבַּעְתָּם.”
“The hands of a man were under their wings on their four sides, and each of the four had faces and wings.”
The rabbis of the Zohar explained that the hands from the vision of Ezekiel are the hands that welcome those who repent and come back to the Holy One Blessed be He. But the hands of man have shapes and supernal secrets that the Holy One Blessed be He put in us. These shapes are made on the inner and outer sides of the fingers and also in the palm (כף) of the hand.
When the Holy One Blessed be He created man, he arranged in him all the shapes of the supernal secrets of the world of Binah, and all the secrets of the lower world, Malchut.
And they are all engraved in man, who is in the image of God צלם אלהים because man is called, ‘יציר כף’ creation of a hand, meaning the creation of the palm ‘כף’ of God.
The word ‘Palm’ ‘כף’, pronounced ‘caf’ is also the name of the letter ‘כ’. It is written “and God created man in his own image’’, which is the secret of the letter כף. It has supernal secrets and reflects higher spiritual forms. The palm of the hand connects to ten utterances, five in the palm of the right hand and five in the left palm. They are considered as one because the right and the left unite into one.