This document describes a Christian object lesson about the Holy Spirit. It involves bringing various objects that use air like balloons, balls, and fans. The lesson asks children to identify that the objects all use air that can't be seen. This represents how we can't see the Holy Spirit but can see his effects. The lesson applies this by saying we can't see Jesus anymore either, but he promised a helper, the Holy Spirit, whose presence and works we can discern through their impacts on people, just as we know air is present through its impacts on the objects.