To have the Spirit of the Lord cause a mighty change in a person's heart so that he has no more desire to do evil, but rather desires to seek the things of God.

I will put a new spirit within you, Ezek. 11: 19 (Ezek. 18: 31; 36: 26). Those who believed on Christ's name were born, not of blood, but of God, John 1: 12-13. Except a man be born of water and of the Spirit, he cannot enter into the kingdom of God, John 3: 3-7. We can be born again by the word of God, 1 Pet. 1: 3-23. Whosoever is born of God does not continue in sin, JST, 1 Jn. 3: 9. For whatsoever is born of God overcomes the world, 1 Jn. 5: 4. Those who are born of Christ covenant with God, Mosiah 3: 19; 5: 2-7. All people must be born again; yea, born of God, Mosiah 27: 25-26 (Alma 5: 49). Have ye spiritually been born of God? Alma 5: 12-19. If ye are not born again, ye cannot inherit the kingdom of heaven, Alma 7: 14. Whosoever believes on my words shall be born of me, even of water and of the Spirit, D&C 5: 16. Ye must be born again into the kingdom of heaven, Moses 6: 59.