We tend to forget about the Holy Spirit. It's helpful to understand the Holy Spirit in the context of the Trinity. To do so, often people reach for metaphors, but all metaphors fail at some point. As we work to understand God the Holy Spirit, it seems like the Spirit is a backseat member of the Trinity because Jesus gets so much attention. However, the Holy Spirit is a fully active member of the Trinity. The Holy Spirit is fully God, though, at times, the forgotten God.