A Celtic Cross is a symbol that combines a cross with a ring surrounding the intersection. The symbol is associated with Celtic Christianity, although it has older, pre-Christian origins. Such crosses form a major part of Celtic art. A standing Celtic cross, made of stone and often richly ornamented, is called a high cross or Irish Cross.

Celtic crosses may have origins in the early Coptic church. The similarity between the ankh, symbol of "life" and variations of the cross or ankh with a circle on Coptic stella and textiles from as early as the 5th century clearly show that the combination of circle and cross were used in early Christian Egypt. Although some experts say that they were originally carved horizontally on stone, their Geometrical ring construction and the fact that the lights in east-facing high crosses can be seen to refract early morning sunlight is indicative of vertical construction.

In Ireland, it is a popular myth that the Celtic cross was introduced to the island by Saint Patrick or possibly Saint Declan during his time converting the pagan Irish. It is believed that Saint Patrick combined the symbol of Christianity, a cross, with the symbol of the sun (or possibly the moon), to give pagan followers an idea of the importance of the cross by linking it with the idea of the life-giving properties of the sun.[

The cross moline is a difference, or mark of cadency in English heraldry. It is so called because its shape resembles a millrind (the iron clamp of the upper millstone). It is borne both inverted and rebated, and sometimes saltirewise or in saltire. When used as a mark of cadency it represents the eighth son.The Moline Cross is a type of Forked Cross with prongs anserated on each of the four arms. Like the Armenian Cross and St. John's Cross, the four double-tipped arms create eight points which remind us of the eight beatitudes. The Beatitudes (from Latin beatus, meaning "blessed" or "happy") is the beginning portion of the Sermon on the Mount of the Gospel of Matthew. Some are also recorded in the Gospel of Luke. In the section, Jesus describes the qualities of the inhabitants of the Kingdom of heaven and indicates how each is or will be blessed. The Beatitudes do not describe many separate individuals, but rather all the specific characteristics each must have to experience heaven. Biblical scholar and author Andrej Kodjak has stated that this opening of the sermon was designed to shock the audience as a deliberate inversion of standard values, but this shock value has been lost today due to the commonness of the text.

Ichthys, is the Ancient and Classical Greek word for "fish." In English it refers to a symbol consisting of two intersecting arcs, the ends of the right side extending beyond the meeting point so as to resemble the profile of a fish, said to have been used by early Christians as a secret symbol and now known colloquially as the "sign of the fish" or the "Jesus fish."

Societies of Christians in Hellenistic Greece and Roman Greece, prior to the Edict of Milan, protected their congregations by keeping their meetings secret. In order to point the way to ever-changing meeting places, they developed a symbol which adherents would readily recognize, and which they could scratch on rocks, walls and the like, in advance of a meeting. At the time, a similar symbol was used by Greeks to mark the location of a funeral, so using the ichthys also gave an apparent legitimate reason for Christians to gather

Within astrology, the symbol of the fish can also have the double meaning of the sign of Pisces. According to some astrological theorists, Jesus Christ represents the central figure of the Age of Pisces, which is now giving way to the Age of Aquarius. The Ages go backwards through the signs of the Zodiac. Prior to the birth of Christ there was the Age of Aries and before that Taurus and so on. Each Age lasts approximately 2,000 years.

The most common symbol of Christianity, intended to represent the death of Jesus when he was crucified on the True Cross and his resurrection in the New Testament.

A cross is a geometrical figure consisting of two lines or bars perpendicular to each other, dividing one or two of the lines in half. The lines usually run vertically and horizontally; if they run diagonally, the design is technically termed a saltire.

The cross is one of the most ancient human symbols, and is used by many religions, such as Christianity. It is frequently a representation of the division of the world into four elements , or alternately as the union of the concepts of divinity, the vertical line, and the world, the horizontal line.

The Cross of Lorraine is a heraldic cross. The "double cross" consists of a vertical line crossed by two smaller horizontal bars. The lower bar is as close to the bottom of the vertical as the upper is to the top. In the ancient version, both bars were of the same length. In 20th century use it is displayed as "graded", where the lower bar is longer than the upper, thus resembling a patriarchal cross, the crossbars of which, however, are both near the top.

The Cross of Lorraine is part is part of the heraldic arms of Lorraine in Eastern France. It was originally held to be a symbol of Joan of Arc, renowned for her perserverance against foreign invaders of France. The Lorraine Cross was carried to the Crusades by the original Knights Templar, granted to them for their use by the Patriarch of Jerusalem.

The Greek Cross was used especially by Eastern Orthodoxy and Early Christianity Also known as the crux immissa quadrata. Has all arms of equal length. Often the arms curve wider as they go out. The cross is one of the most ancient human symbols, and is used by many religions, such as Christianity. It is frequently a representation of the division of the world into four elements (Chevalier, 1997) (or cardinal points), or alternately as the union of the concepts of divinity, the vertical line, and the world, the horizontal line (Koch, 1955).

The Eastern Orthodox cross (also known as Crux Orthodoxa, the Byzantine cross, the Russian Cross and the Eastern cross) can be considered a modified version of the Patriarchal cross, having two smaller crossbeams, one at the top and one near the bottom, in addition to the longer crossbeam. One suggestion is the lower crossbeam represents the footrest (suppendaneum) to which the feet of Jesus were nailed. In some earlier representations (and still currently in the Greek Church) the crossbar near the bottom is straight. In later Russian and other traditions, it came to be depicted as slanted, with the side to the viewer's left usually being higher.

One tradition says that this comes from the idea that as Jesus Christ took his last breath, the bar to which his feet were nailed broke, thus slanting to the side. Another tradition holds that the slanted bar represents the repentant thief and the unrepentant thief that were crucified with Christ, the one to Jesus' right hand repenting and rising to be with God, and one on his left falling to Hell and separation from God. In this manner it also reminds the viewer of the Last Judgment.

The most popular explanation for this symbol is from the story of the Israelites who, whilst crossing the desert, began complaining against God and the prophet Moses. God punished the people by sending serpents among them and many were bitten and died before Moses interceded by praying to God to forgive them. God instructed Moses to raise a venomous snake on a staff and all the wounded Israelites who looked on it were immediately healed.

The Serpent Cross draws a parallel with Christ, who was raised upon a cross for people to look upon and be healed.