meaning of i am the alpha and omega
Alpha and Omega alpha (Α) and omega (Ω) are the first and last letters, respectively, of the classical (Ionic) Greek alphabet. Thus, twice when the phrase "I am the alpha and the omega" appears it is further clarified with the additional phrase, "the beginning and the end" (Revelation 21:6, 22:13). The first and last letters of the Greek alphabet were used because the book of Revelation is in the New Testament, which was originally written in Greek.
Greek alphabet In its classical and modern forms, the alphabet has 24 letters, ordered from alpha to omega. Like Latin and Cyrillic, Greek originally had only a single form of each letter; it developed the letter case distinction between upper-case and lower-case forms in parallel with Latin during the modern era.