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

Exodus 39:9

It was foursquare; they made the breastplate double: a span was the length thereof, and a span the breadth thereof, being doubled.

Parallel Translations

LXXView canonical →
and the bases of the court round about, and the bases of the gate of the court, and the pins of the tabernacle, and the pins of the court round about;
Brenton's Septuagint Translation
LXX2012View canonical →
and the bases of the court round about, and the bases of the gate of the court, and the pins of the tabernacle, and the pins of the court round about;
Septuagint in American English (2012)
WEBView canonical →
It was square. They made the breastplate double. Its length was a span, and its width a span, being double.
World English Bible