Revelation 21: 5 - 8 (NKJV) says:
5 Then He who sat on the throne said, "Behold,
I make all things new."
And He said to me, "Write, for these words are
true and faithful."
6 And He said to me, "It is done! I am the
Alpha and the Omega, the Beginning and the End.
I will give of the fountain of the water of life freely
to him who thirsts.
7 He who overcomes shall inherit all things, and
I will be his God and he shall be My son.
8 But the cowardly, unbelieving, abominable
murderers, sexually immoral, sorcerers, idolators
and all liars shall have their part in the lake which
burns with fire and brimstone, which is the second death."
Revelation 21: 14 (NKJV)
14 Now the wall of the city had twelve foundations,
and on them were the names of the twelve apostles
of the Lamb.
1. Simon, called Peter
2. Andrew, the brother of Simon Peter
3. James, son of Zebedee (called the son of Zebedee
by Mark and Matthew)
4. John, (Mark and Matthew identify him as the
brother of James, son of Zebedee)
5. Philip
6. Bartholomew, named Nathanael in John
7. Matthew, named Levi in Luke and Mark
8. Thomas
9. James , the son of Alphaeus
10. Simon, called a zealot in Mark, Matthew, and Luke
11. Jude Thaddeus, called Thaddaeus by Mark,
Lebbaeus Thaddaeus by Matthew,
and Judas of James by Luke
12. Matthias replaced Judas Iscariot -
(Reference - John 6: 70 & 71 (NKJV) says:
70 Jesus answered them,
"Did I not choose you, the twelve, and one of you is a devil?"
71 He spoke of Judas Iscariot, the son of Simon,
for it was he who would betray Him, being one of the twelve.
Revelation 21: 19 (NKJV)
The foundations of the wall of the city were adorned
with all kinds of precious stones:
1. Jasper 2. Sapphire 3. Chalcedony 4. Emerald
5. Sardonyx 6. Sardius 7. Chrysolite 8. Beryl
9. Topaz 10. Chrysoprase 11. Jacinth 12. Amethyst
1 2 3 4 5 6 7 8 9 10 11 12 
Read - Revelation 21: 12-13 & Revelation 21: 21 (NKJV)
"Twelve Gates of Pearls with Twelve Angels"
SARDIUS/RED......JUDAH/PRAISE 
TOPAZ/TO SEEK......ISSACHAR/REWARD 
CARBUNCLE/GLITTERING......ZEBULUN/HABITATION
3 NORTH GATES: EAGLE
BERYL/SUBDUE......DAN/JUDGE
ONYX/FIRESPLENDOR......ASHER/BLESSED
JASPER/TRANSPARENT....NAPHTALI/WRESTLER
3 SOUTH GATES:MAN
EMERALD/HEALING.....REUBEN/SEE A SON
SAPPHIRE/TO DISCERN.....SIMEON/TO HEAR 
DIAMOND/ADAMANT......GAD/OVERCOME
3 WEST GATES: OX
LIGURE/MYSTERY.....EPHRAIM/DOUBLE PORTION
AGATE/DELIGHT......MANASSEH/FORGETFULNESS
AMETHYST/HARD......BENJAMIN/SON OF MY RIGHT HAND
Jesus / The New Jerusalem (The City of God)