Acts 9 Is one of the best examples of being a 'chosen' one, as Christ came and intervened directly in Paul's life, not the other way around. That's a sign of being 'a chosen vessel' for The LORD helping to work His Plan. These 'sanctified ones' already, even in this flesh age, belong to our LORD, and will not experience the 'second death' which is the casting of the spiritual body into the lake of fire, being blotted out forevermore.

 

Rev.2:11: He that hath an ear, let him hear what the Spirit saith unto the churches; He that overcometh shall not be hurt of the second death.

 

Rev 20:6: Blessed and Holy is he that hath part in the first resurrection: on such the second death hath no power, but they shall be priests of God and of Christ, and shall reign with him a thousand years 

 

Rev 20:14: And death and hell were cast into the lake of fire. This is the second death.

 

Rev 21:8: But the fearful, and unbelieving, and the abominable, and murderers, and whoremongers, and sorcerers, and idolaters, and all liars, shall have their part in the lake which burneth with fire and brimstone; which is the second death.

 

See above verses to understand what it means to be 'sanctified', 'chosen', and 'called', i.e. 'elect', see the following verses and note when some were called, meaning the first earth age, before the foundation (katabole or 'overthrow') of this world, etc. –

 

Jude 1:1: Jude, the servant of Jesus Christ, and brother of James, to them that are sanctified by God the Father, and preserved in Jesus Christ, and called.

 

 I Cor.1:2: Unto the church of God which is at Corinth, to them that are sanctified in Christ Jesus, called to be saints, with all that in every place call upon the name of Jesus Christ our Lord, both theirs and ours.

 

Rom.8:30: Moreover whom He did predestinate, them he also called: and whom he called, them he also justified: and whom he justified, them he also glorified.

 

Rom. 9:21-24: 24; Even us, whom He hath called, not of the Jews only, but also of the Gentiles.

 

Rom.15:16: That I should be the minister of Jesus Christ to the Gentiles , ministering the gospel of God, that the offering up of the Gentiles might be acceptable, being sanctified by the Holy Ghost.

 

2 Thess 2:13: But we are bound to give thanks alway  to God for you, brethren beloved of the Lord, because God hath from the beginning chosen you to salvation through sanctification of the Spirit and belief of the truth:

 

2 Tim 1:9: Who hath saved us, and called us with an Holy calling, not according to our works, but according to His own purpose and grace, which was given us in Christ Jesus before the world began.

 

 Heb.3:1: Wherefore, holy brethren, partakers of the heavenly calling, consider the Apostle and High Priest of our profession, Christ Jesus;

 

1 Peter 2:9: But ye are a chosen generation, a royal priesthood, an Holy nation, a peculiar people, that ye should shew forth the praises of Him Who hath called you out of darkness into His marvellous light: