Mark 3:13-19 and Hebrews 8:6-13

 http://www.usccb.org/bible/readings/012017.cfm

Mark 3:13-19
Jesus went up the mountain and summoned those whom he wanted 
and they came to him.
He appointed Twelve, whom he also named Apostles,
that they might be with him
and he might send them forth to preach 
and to have authority to drive out demons:
He appointed the Twelve:
Simon, whom he named Peter; 
James, son of Zebedee, 
and John the brother of James, whom he named Boanerges, 
that is, sons of thunder;
Andrew, Philip, Bartholomew,
Matthew, Thomas, James the son of Alphaeus; 
Thaddeus, Simon the Cananean,
and Judas Iscariot who betrayed him.
Hebrews 8:6-13
Brothers and sisters:
Now our high priest has obtained so much more excellent a ministry
as he is mediator of a better covenant, 
enacted on better promises.

For if that first covenant had been faultless, 
no place would have been sought for a second one.
But he finds fault with them and says:
Behold, the days are coming, says the Lord,
when I will conclude a new covenant with the house of 
Israel and the house of Judah.
It will not be like the covenant I made with their fathers
the day I took them by the hand to lead 
them forth from the land of Egypt;
for they did not stand by my covenant
and I ignored them, says the Lord.
But this is the covenant I will establish with the house of Israel
after those days, says the Lord:
I will put my laws in their minds
and I will write them upon their hearts.
I will be their God,
and they shall be my people.
And they shall not teach, each one his fellow citizen and kin, saying,
"Know the Lord,"
for all shall know me, from least to greatest.
For I will forgive their evildoing
and remember their sins no more.

When he speaks of a "new" covenant, 
he declares the first one obsolete.
And what has become obsolete 
and has grown old is close to disappearing.