The strength of a Christian lies in the full assurance of eternal life by salvation through Jesus Christ. This is the hope of our salvation, something that is not just a wish or desire but a full assurance in the finished work of Jesus Christ, and something eternally held in the strong hand of our Heavenly Father. Not everyone has this confidence and assurance, but whosoever will call upon the name of the Lord can. These things have been written for believers to know that we have eternal life. With this knowledge, we have nothing to fear because we know that God is with us.

1 John 5:7-13

7. For there are three that bear record in heaven, the Father, the Word, and the Holy Ghost: and these three are one.

8. And there are three that bear witness in earth, the Spirit, and the water, and the blood: and these three agree in one.

9. If we receive the witness of men, the witness of God is greater: for this is the witness of God which he hath testified of his Son.

10. He that believeth on the Son of God hath the witness in himself: he that believeth not God hath made him a liar; because he believeth not the record that God gave of his Son.

11. And this is the record, that God hath given to us eternal life, and this life is in his Son.

12. He that hath the Son hath life; and he that hath not the Son of God hath not life.

13. These things have I written unto you that believe on the name of the Son of God; that ye may know that ye have eternal life, and that ye may believe on the name of the Son of God.