John Gill Commentary 2 Chronicles 2:9

"even to prepare me timber in abundance; for the house which I am about to build shall be great and wonderful." — 2 Chronicles 2:9 (ASV)

Even to prepare me timber in abundance
Since he would want a large quantity for raftering, ceiling, wainscoting, and flooring the temple:

for the house which I am about to build shall be wonderful great ;
as to its structure and ornaments.