Old Testament readings use the Septuagint , the Scripture the apostles quoted. Masoretic numbering shown for reference.Learn why
LXX2012

Prayer of Azariah 1:23

So that the flame streamed forth above the furnace forty and nine cubits.

Parallel Translations

KJVView canonical →
And the king’s servants, that put them in, ceased not to make the oven hot with rosin, pitch, tow, and small wood;
King James Version