The church that Christ set up has by scriptures presented the church as, few, the remnant, the little flock, etc. The number of the elect are presented as the sands of the sea and the stars in the heavens, too many to count. There is a universal church which incompuses all of the elect and there is a visiable church that preaches the truth of Christ's doctrine.
Elect are the few, the saved will be amount saved like the sands of the seashore.
Matthew 9:
The Workers Are Few
35 Jesus went through all the towns and villages, teaching in their synagogues, proclaiming the good news of the kingdom and healing every disease and sickness. 36 When he saw the crowds, he had compassion on them, because they were harassed and helpless, like sheep without a shepherd. 37 Then he said to his disciples, “The harvest is plentiful but the workers are few. 38 Ask the Lord of the harvest, therefore, to send out workers into his harvest field.”
Matthew 22:14
“For many are invited, but few are chosen.”
The few, the elect
Revelation 7:
4 Then I heard the number of those who were sealed: 144,000 from all the tribes of Israel.
5 From the tribe of Judah 12,000 were sealed,
from the tribe of Reuben 12,000,
from the tribe of Gad 12,000,
6 from the tribe of Asher 12,000,
from the tribe of Naphtali 12,000,
from the tribe of Manasseh 12,000,
7 from the tribe of Simeon 12,000,
from the tribe of Levi 12,000,
from the tribe of Issachar 12,000,
8 from the tribe of Zebulun 12,000,
from the tribe of Joseph 12,000,
from the tribe of Benjamin 12,000.
God will use this elect to bring the saved in
Revelation 7:
The Great Multitude in White Robes
9 After this I looked, and there before me was a great multitude that no one could count, from every nation, tribe, people and language, standing before the throne and before the Lamb. They were wearing white robes and were holding palm branches in their hands. 10 And they cried out in a loud voice:
“Salvation belongs to our God,
who sits on the throne,
and to the Lamb.”
11 All the angels were standing around the throne and around the elders and the four living creatures. They fell down on their faces before the throne and worshiped God, 12 saying:
“Amen!
Praise and glory
and wisdom and thanks and honor
and power and strength
be to our God for ever and ever.
Amen!”
13 Then one of the elders asked me, “These in white robes—who are they, and where did they come from?”
14 I answered, “Sir, you know.”
And he said, “These are they who have come out of the great tribulation;
they have washed their robes and made them white in the blood of the Lamb.
The elect, the few
Ephesians 1:
11 In him we were also chosen,[Or were made heirs] having been predestined according to the plan of him who works out everything in conformity with the purpose of his will, 12 in order that we, who were the first to put our hope in Christ, might be for the praise of his glory.
The saved like the sands of the sea shore
Ephesians 1:
13 And you also were
included in Christ when you heard the message of truth, the gospel of your salvation. When you believed, you were marked in him with a seal, the promised Holy Spirit, 14 who is a deposit guaranteeing our inheritance until the redemption of those who are God’s possession—to the praise of his glory.
To be included means they were not there in the first place.