The term 'Before Iota Letter' refers to the three Greek letters that come before the letter Iota in the Greek alphabet. The first of these is Theta (Θ), which is a letter representing the number nine and is also used to represent the idea of death or mortality. The second is Kappa (Κ), which is a letter representing the number twenty and is also used to represent the idea of justice or fairness. The third is All (Αλλ), which is a letter representing the number one and is also used to represent the idea of unity or oneness.