Believers are “called” which is a verb. This word is also used in noun form “the called” which is the Greek word ekklesia. Ek means out and kaleo means call.
So the church , believers are the called out ones. Called out from where? Called out from the world .
Rom 1:6 including you who are called to belong to Jesus Christ,
Rom 1:7 To all those in Rome who are loved by God and called to be saints: Grace to you and peace from God our Father and the Lord Jesus Christ.
Rom 11:29 For the gifts and the calling of God are irrevocable
1Co 1:24 but to those who are called, both Jews and Greeks, Christ the power of God and the wisdom of God.
1Co 1:25 For the foolishness of God is wiser than men, and the weakness of God is stronger than men.
Eph 4:1 I therefore, a prisoner for the Lord, urge you to walk in a manner worthy of the calling to which you have been called,
Eph 4:4 There is one body and one Spirit—just as you were called to the one hope that belongs to your call—
Col 3:15 And let the peace of Christ rule in your hearts, to which indeed you were called in one body. And be thankful.
1Th 2:12 we exhorted each one of you and encouraged you and charged you to walk in a manner worthy of God, who calls you into his own kingdom and glory.
2Th 2:13 But we ought always to give thanks to God for you, brothers beloved by the Lord, because God chose you as the firstfruits to be saved, through sanctification by the Spirit and belief in the truth.
2Th 2:14 To this he called you through our gospel, so that you may obtain the glory of our Lord Jesus Christ.
1Pe 2:9 But you are a chosen race, a royal priesthood, a holy nation, a people for his own possession, that you may proclaim the excellencies of him who called you out of darkness into his marvelous light.