JESUS, THE BEGINING & END
Genesis 1:2 I am the Beginning and the End; the Almighty God. By mine Only Begotten I created these things.
Revelation 21:6 And he said unto me, It is done. I am Alpha and Omega, the beginning and the end. I will give unto him that is athirst of the fountain of the water of life freely.
Book of Mormon
2 Nephi 8:9 And all things which have been given of God from the beginning of the world, unto man, are the typifying of him.
Doctrine & Covenants
D&C 54:1a Behold, thus saith the Lord, even Alpha and Omega, the beginning and the end, even he who was crucified for the sins of the world.