In the Christian tradition, IHS is an abbreviation for In Hoc Signo (In this sign [you will win]) which is reported to be what Saint Paul saw in the sky prior to a key battle. The horizontal Jesus monogram I H S was combined with the vertical Cabbalistic Jesus monogram of cross and letter (shin), the two monograms building a further cross. mc2.vicnet.net.au/home/aura/shared_files/Berger2.pdf - ..... In the pre-Christian tradition I is asociated with the male and S with the female. The H can also be seen as a double I with a joint as we see in the Gemini symbol. Hence the H also becomes a starting point of new life, typically shown in the Christian tradition as a cross on top of the central juncture.