Adam Clarke on John 8:20

The treasury - Lightfoot observes, from the rabbins, that the treasury was in what was called the court of the women - that there were thirteen chests in it; in the thirteenth only the women were permitted to put their offerings. Probably the other twelve were placed there in reference to the twelve tribes; each perhaps inscribed with the name of one of Jacob's twelve sons.

It seems that our Lord sometimes sat in this court to teach the people. See Mar 12:41, etc.

His hour was not yet come - The time was not arrived, in which he had determined to give himself up into the hands of his crucifiers.