Assurance of salvation:
Acts 13:38-39
38 Therefore let it be known to you, brethren, that through this Man is preached to you the forgiveness of sins;
39 and by Him everyone who believes is justified from all things from which you could not be justified by the law of Moses.
NKJV
Romans 4:5-8
5 But to him who does not work but believes on Him who justifies the ungodly, his faith is accounted for righteousness,
6 just as David also describes the blessedness of the man to whom God imputes righteousness apart from works:
7 "Blessed are those whose lawless deeds are forgiven, And whose sins are covered;
8 Blessed is the man to whom the Lord shall not impute sin."
NKJV
Romans 10:3-4
3 For they being ignorant of God's righteousness, and seeking to establish their own righteousness, have not submitted to the righteousness of God.
4 For Christ is the end of the law for righteousness to everyone who believes.
NKJV
Romans 10:10-13
10 For with the heart one believes unto righteousness, and with the mouth confession is made unto salvation.
11 For the Scripture says, "Whoever believes on Him will not be put to shame."
12 For there is no distinction between Jew and Greek, for the same Lord over all is rich to all who call upon Him.
13 For "whoever calls on the name of the Lord shall be saved."
NKJV
1 John 5:4-5
4 For whatever is born of God overcomes the world. And this is the victory that has overcome the world — our faith.
5 Who is he who overcomes the world, but he who believes that Jesus is the Son of God?
NKJV
1 John 5:9-13
9 If we receive the witness of men, the witness of God is greater; for this is the witness of God which He has testified of His Son.
10 He who believes in the Son of God has the witness in himself; he who does not believe God has made Him a liar, because he has not believed the testimony that God has given of His Son.
11 And this is the testimony: that God has given us eternal life, and this life is in His Son.
12 He who has the Son has life; he who does not have the Son of God does not have life.
13 These things I have written to you who believe in the name of the Son of God, that you may know that you have eternal life, and that you may continue to believe in the name of the Son of God.
NKJV
The children of God HAVE eternal life
Acts 13:38-39
38 Therefore let it be known to you, brethren, that through this Man is preached to you the forgiveness of sins;
39 and by Him everyone who believes is justified from all things from which you could not be justified by the law of Moses.
NKJV
Romans 4:5-8
5 But to him who does not work but believes on Him who justifies the ungodly, his faith is accounted for righteousness,
6 just as David also describes the blessedness of the man to whom God imputes righteousness apart from works:
7 "Blessed are those whose lawless deeds are forgiven, And whose sins are covered;
8 Blessed is the man to whom the Lord shall not impute sin."
NKJV
Romans 10:3-4
3 For they being ignorant of God's righteousness, and seeking to establish their own righteousness, have not submitted to the righteousness of God.
4 For Christ is the end of the law for righteousness to everyone who believes.
NKJV
Romans 10:10-13
10 For with the heart one believes unto righteousness, and with the mouth confession is made unto salvation.
11 For the Scripture says, "Whoever believes on Him will not be put to shame."
12 For there is no distinction between Jew and Greek, for the same Lord over all is rich to all who call upon Him.
13 For "whoever calls on the name of the Lord shall be saved."
NKJV
1 John 5:4-5
4 For whatever is born of God overcomes the world. And this is the victory that has overcome the world — our faith.
5 Who is he who overcomes the world, but he who believes that Jesus is the Son of God?
NKJV
1 John 5:9-13
9 If we receive the witness of men, the witness of God is greater; for this is the witness of God which He has testified of His Son.
10 He who believes in the Son of God has the witness in himself; he who does not believe God has made Him a liar, because he has not believed the testimony that God has given of His Son.
11 And this is the testimony: that God has given us eternal life, and this life is in His Son.
12 He who has the Son has life; he who does not have the Son of God does not have life.
13 These things I have written to you who believe in the name of the Son of God, that you may know that you have eternal life, and that you may continue to believe in the name of the Son of God.
NKJV
The children of God HAVE eternal life