Verses with the word cassia in the Old Testament (3 verses):

Exodus 30:24
And of cassia five hundred shekels, after the shekel of the sanctuary, and of oil olive an hin:

Psalms 45:8
All thy garments smell of myrrh, and aloes, and cassia, out of the ivory palaces, whereby they have made thee glad.

Ezekiel 27:19
Dan also and Javan going to and fro occupied in thy fairs: bright iron, cassia, and calamus, were in thy market.