וְאַרְבָּעָ֥ה פָנִ֖ים לְאֶחָ֑ד פְּנֵ֨י הָאֶחָ֜ד פְּנֵ֣י הַכְּר֗וּב וּפְנֵ֤י הַשֵּׁנִי֙ פְּנֵ֣י אָדָ֔ם וְהַשְּׁלִישִׁי֙ פְּנֵ֣י אַרְיֵ֔ה וְהָרְבִיעִ֖י פְּנֵי־נָֽשֶׁר׃
At bawat isa ay may apat na mukha: ang unang mukha ay mukha ng kerubin, at ang ikalawang mukha ay mukha ng tao, at ang ikatlo ay mukha ng leon, at ang ikaapat ay mukha ng agila.
Rashi
they had the likeness of a man This is surprising, because they had also the likeness of an ox, a lion, and an eagle! Apparently, since this [being] is the patron of them all [all the living beings], the prophet praises the Chariot with it. [Their human face] had the countenance of our father Jacob.
Rashi
and each one had four faces “Each one” means that the human countenance had four faces, as did that of the lion, the eagle, and the ox, totaling sixteen [faces] to one living being. It was thus for each living being, and four wings for each of the faces, totaling sixty-four wings for each living being. This is [why] Jonathan paraphrased: two hundred fifty-six wings.
Ibn Ezra
And you shall make: Our predecessors said that the form of the keruvim were like two youths, and that its meaning is "like a baby (keravya)" in Aramaic, and that the [letter] kaf is [a prefix]. Yet they spoke correctly, that they have the form of children - if they have a tradition, and they made the word a mnemonic, like chanukah [is used]. For the kaf [in] keruv is [part of the] root. And the testimony ([is in] verse 20 of this chapter), "and hakeruvim were" - since the [letter] hay [at the beginning of the word (ha)] is a definitive hay and not one of questioning, like the hay (in Isaiah 27:7), "Was he beaten as his beater has been?" (Had the hay been used as a questioning hay, the kaf could have been part of the root.)