According to the Jewish tradition G-d has 72 names. In ancient times once a year on Yom Kippur, until the destruction of the Second Temple the Great Priest (Kohen Gadol) would have entered the Holy of Holies in order to make atonement for the people of Israel. While closed inside the rest of the Israelites were waiting in anticipation outside the temple and the Great Priest would say the 72 sacred and secret names of G-d. At those ancient times only the Great Priests knew those 72 names and the secret code to get them. The code was delivered only from one Great Priest to his successor.
According to Kabbalistic scholars those 72 combinations of ancient Hebrew letters are very powerful. It is believed that the 72 three letters combinations have a very powerful and meaningful influence on our life. Although our brain does not understand the names our soul recognizes the sacred letters.
He, Resh, Yod are the fifth, twenties and tenth letters of the Hebrew Alphabet. The wisdom of Kabbalah teaches us that we are surrounded by opaque screens. Those screens limit our views, distort our vision and do not let us acknowledge reality. The fifteenth G-d name should clear our vision, remove the blocking screens and help us take the right decisions. Followers of Kabbalah believe this G-d's name is the instrument that will make us take the right diretions when we stand at major junctions of our life.