Most of us do not go around calling each other “saints”. But this term is used in more than 25 passages (besides the greetings and closings of Paul’s letters). The word “saint” is related to the word “sanctified”, not just in English, but also in Greek and Hebrew. Therefore being a saint is related to being holy. When Paul, Luke and others use this term, the focus of meaning is on the saint’s special relationship with God, which is an aspect of what holiness means. Notice that the word does not refer to saints in heaven, but to saints on earth, which is who we are if we are believers and disciples, and therefore, in the truest sense, Christian.
Then Ananias answered, Lord, I have heard by many of this man, how much evil he hath done to thy saints at Jerusalem:
And it came to pass, as Peter passed throughout all quarters, he came down also to the saints which dwelt at Lydda.
And he gave her his hand, and lifted her up, and when he had called the saints and widows, presented her alive.
Which thing I also did in Jerusalem: and many of the saints did I shut up in prison, having received authority from the chief priests; and when they were put to death, I gave my voice against them.
To all that be in Rome, beloved of God, called to be saints: Grace to you and peace from God our Father, and the Lord Jesus Christ. (“to be” not in the original, hence italicized in the KJV).
And he that searcheth the hearts knoweth what is the mind of the Spirit, because he maketh intercession for the saints according to the will of God. (Note, intercession for saints on earth, as opposed to praying to the saints in heaven as intercessors.)
Distributing to the necessity of saints; given to hospitality.
But now I go unto Jerusalem to minister unto the saints.
For it hath pleased them of Macedonia and Achaia to make a certain contribution for the poor saints which are at Jerusalem.
That I may be delivered from them that do not believe in Judaea; and that my service which I have for Jerusalem may be accepted of the saints;
That ye receive her in the Lord, as becometh saints, and that ye assist her in whatsoever business she hath need of you: for she hath been a succourer of many, and of myself also.
Salute Philologus, and Julia, Nereus, and his sister, and Olympas, and all the saints which are with them.
1 Corinthians 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:
1 Corinthians 6:1
Dare any of you, having a matter against another, go to law before the unjust, and not before the saints?
1 Corinthians 6:2
Do ye not know that the saints shall judge the world? and if the world shall be judged by you, are ye unworthy to judge the smallest matters?
1 Corinthians 14:33
For God is not the author of confusion, but of peace, as in all churches of the saints.
1 Corinthians 16:1
Now concerning the collection for the saints, as I have given order to the churches of Galatia, even so do ye.
1 Corinthians 16:15
I beseech you, brethren, (ye know the house of Stephanas, that it is the firstfruits of Achaia, and that they have addicted themselves to the ministry of the saints,)
2 Corinthians 1:1
Paul, an apostle of Jesus Christ by the will of God, and Timothy our brother, unto the church of God which is at Corinth, with all the saints which are in all Achaia:
2 Corinthians 8:4
Praying us with much intreaty that we would receive the gift, and take upon us the fellowship of the ministering to the saints.
2 Corinthians 9:1
For as touching the ministering to the saints, it is superfluous for me to write to you:
2 Corinthians 9:12
For the administration of this service not only supplieth the want of the saints, but is abundant also by many thanksgivings unto God;
2 Corinthians 13:13
All the saints salute you.
Paul, an apostle of Jesus Christ by the will of God, to the saints which are at Ephesus, and to the faithful in Christ Jesus: (“faithful” here means believers in Christ Jesus)
Unto me, who am less than the least of all saints, is this grace given, that I should preach among the Gentiles the unsearchable riches of Christ;
For the perfecting of the saints, for the work of the ministry, for the edifying of the body of Christ:
Praying always with all prayer and supplication in the Spirit, and watching thereunto with all perseverance and supplication for all saints;
Paul and Timotheus, the servants of Jesus Christ, to all the saints in Christ Jesus which are at Philippi, with the bishops and deacons:
Salute every saint in Christ Jesus. The brethren which are with me greet you.
All the saints salute you, chiefly they that are of Caesar’s household.
To the saints and faithful brethren in Christ which are at Colosse: Grace be unto you, and peace, from God our Father and the Lord Jesus Christ.
Since we heard of your faith in Christ Jesus, and of the love which ye have to all the saints,
Even the mystery which hath been hid from ages and from generations, but now is made manifest to his saints:
1 Timothy 5:10
Well reported of for good works; if she have brought up children, if she have lodged strangers, if she have washed the saints’ feet, if she have relieved the afflicted, if she have diligently followed every good work.
For we have great joy and consolation in thy love, because the bowels of the saints are refreshed by thee, brother.
For God is not unrighteous to forget your work and labour of love, which ye have shewed toward his name, in that ye have ministered to the saints, and do minister.
Salute all them that have the rule over you, and all the saints. They of Italy salute you.
Beloved, when I gave all diligence to write unto you of the common salvation, it was needful for me to write unto you, and exhort you that ye should earnestly contend for the faith which was once delivered unto the saints.
And it was given unto him to make war with the saints, and to overcome them: and power was given him over all kindreds, and tongues, and nations.
For they have shed the blood of saints and prophets, and thou hast given them blood to drink; for they are worthy.
And I saw the woman drunken with the blood of the saints, and with the blood of the martyrs of Jesus: and when I saw her, I wondered with great admiration.
And in her was found the blood of prophets, and of saints, and of all that were slain upon the earth.
And they went up on the breadth of the earth, and compassed the camp of the saints about, and the beloved city: and fire came down from God out of heaven, and devoured them.