Question 460: Its all GEEK to me

During the construction of La Sagrada Familia, which according to Gaudi was supposed to chronicle the lifetime of Christ, he placed a symbol (refer to the picture) near the entrance to remind the visitors of one of the appellations of Christ, of his enduring nature.
To all of those who have suffered through high school/college/workplace?(what sort of life choice is that?lol), will recognize these symbols as totems of our torture as well.

So, simple enough

Question:
1) ID the symbol
2) ID where the phrase (or the apellation) was originally found

Answer:

1) Alpha and Omega (notice the sign, its alpha on top, omega at the bottom)

2) I am the alpha and the omega, appears in the book of revelations

+ 5 per part