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

Exodus 36:21

And the stones were twelve according to the names of the children of Israel, graven according to their names like seals, each according to his own name for the twelve tribes.

Parallel Translations

LXX2012View canonical →
And the stones were twelve according to the names of the children of Israel, graven according to their names like seals, each according to his own name for the twelve tribes.
Septuagint in American English (2012)
KJVView canonical →
The length of a board was ten cubits, and the breadth of a board one cubit and a half.
King James Version
WEBView canonical →
Ten cubits was the length of a board, and a cubit and a half the width of each board.
World English Bible