Verses with the word pile in the Old Testament (2 verses):

Isaiah 30:33
For Tophet is ordained of old; yea, for the king it is prepared; he hath made it deep and large: the pile thereof is fire and much wood; the breath of the LORD, like a stream of brimstone, doth kindle it.

Ezekiel 24:9
Therefore thus saith the Lord GOD; Woe to the bloody city! I will even make the pile for fire great.