Sanctification is to be set apart for a sacred purpose. The flesh cannot inherit heaven, therefore by the Holy Spirit are we given the ability to live a righteous life. ( 1 Peter 1:2-7 ).
Paul knew all too well the meaning of being sanctified after remembering all he had done against the people of God and would call himself the least of all saints. Yet in his testimony to King A-grip’-pa he explained how the Lord delivered him only to return again to open the eyes of those who lived as he once did! ( Act 26:13-18 ).13 At midday, O king, I saw in the way a light from heaven, above the brightness of the sun, shining round about me and them which journeyed with me. 14 And when we were all fallen to the earth, I heard a voice speaking unto me, and saying in the Hebrew tongue, Saul, Saul, why persecutest thou me? it is hard for thee to kick against the pricks. 15 And I said, Who art thou, Lord? And he said, I am Jesus whom thou persecutest. 16 But rise, and stand upon thy feet: for I have appeared unto thee for this purpose, to make thee a minister and a witness both of these things which thou hast seen, and of those things in the which I will appear unto thee; 17 Delivering thee from the people, and from the Gentiles, unto whom now I send thee, 18 To open their eyes, and to turn them from darkness to light, and from the power of Satan unto God, that they may receive forgiveness of sins, and inheritance among them which are sanctified by faith that is in me.
The book of John teaches us the word of God sanctifies us as we read Jesus saying when He is speaking to His Father. 16 They are not of the world, even as I am not of the world. 17 Sanctify them through thy truth: thy word is truth. 18 As thou hast sent me into the world, even so have I also sent them into the world. 19 And for their sakes I sanctify myself, that they also might be sanctified through the truth. 20 Neither pray I for these alone, but for them also which shall believe on me through their word; (John 17:16-20 ).