Thou art the anointed cherub. — The tense is not expressed in the Hebrew, and it is better to supply the same simple past as is used throughout the passage: thou wert. The imagery is taken from the Temple upon Mount Zion: not that the king of Tyre had at this time any special connection with this, but that these terms were natural to the prophet in this ironical description of him. “The cherub that covereth” the mercy-seat is spoken of as anointed, with reference to Exodus 30:26; Exodus 40:9.
Upon the holy mountain of God. — The prophet still has his mind upon Mount Zion (comp. Isaiah 11:9; Isaiah 56:7), but yet the words are ironically spoken of Tyre as a venerated sanctuary, rising up from the sea.
Stones of fire. — An obvious explanation of this expression, given by many writers, is that it refers to the brilliant sparkling jewels on the robes in which the king walked. But if this were the case, the expression would be a strange one, and the connection implies a deeper and a religious meaning. It is better, therefore, to understand the imagery as similar to that in Revelation 2:1, and to suppose the prophet to have had in mind such a passage as Exodus 24:10, where a paved work of sapphire stone appears as beneath the feet of God, while His glory is “like a devouring fire.” This would then be one of the ways in which the king of Tyre is ironically represented as assuming to himself God-like attributes.