Gazophulakion (γαζοφυλάκιον) refers to the treasury or offering repository in the Jerusalem temple — the room where temple funds were stored or the chests where worshippers deposited their offerings. It was located in the Court of Women, and Jesus sat near it during his teaching in John 8 and observed the widow's offering in Mark 12.
The scene at the gazophulakion — the widow casting in two copper coins (Mark 12:41-44; Luke 21:1-4) — is one of Scripture's most searching teachings on generosity. Jesus declares that she gave more than all the wealthy, because she gave "out of her poverty, everything she had, all she had to live on." True giving is measured not by amount but by sacrifice. This is the widow's mite, and it measures the heart.