The Sagittarius symbol is the archer ... by a crescent over a cross. Jupiter raises one's awareness outside of the physical world, which can relate to the arrow representing Sagittarius.

The symbol of the anchor, with its crossbar, resembles a cross. An anchor and two fish (probably from the third century) occur together on a grave slab in the catacomb of Domitilla in Rome.

As Michael Card observes in his recent album, Soul Anchor: "The first century symbol wasn't the cross; it was the anchor. If I'm a first century Christian and I'm hiding in the catacombs and three ...