Valtiel,
Please be advised that your friend may not “buy it” no matter what you tell him. You are currently planting seeds. Pray and let the Holy Spirit do the heavy lifting.
Since this person does not appreciate the idea of works as part of justification try having him “explain” exegetically, linguistically, and logically why what you have given him so far is not true. Make sure that he tackles the scriptural passages head on, and that he does not try to dodge them by simply quoting other verses.
Here is another set of passages that he will need to digest and then explain.
Rev 2:7 He who has an ear, let him hear what the Spirit says to the churches. **To him who conquers ** I will grant to eat of the tree of life, which is in the paradise of God.’
Rev 2:11 He who has an ear, let him hear what the Spirit says to the churches. He who conquers shall not be hurt by the second death.’
Rev 2:17 He who has an ear, let him hear what the Spirit says to the churches. **To him who conquers ** I will give some of the hidden manna, and I will give him a white stone, with a new name written on the stone which no one knows except him who receives it.’
Rev 2:26-29 **He who conquers ** and who keeps my works until the end, I will give him power over the nations, and he shall rule them with a rod of iron, as when earthen pots are broken in pieces, even as I myself have received power from my Father; and I will give him the morning star. He who has an ear, let him hear what the Spirit says to the churches.’
Rev 3:4-5 Yet you have still a few names in Sardis, people who have not soiled their garments; and they shall walk with me in white, for they are worthy. **He who conquers ** shall be clad thus in white garments, and I will not blot his name out of the book of life; I will confess his name before my Father and before his angels.
Rev 3:11-13 I am coming soon; hold fast what you have, so that no one may seize your crown. He who conquers, I will make him a pillar in the temple of my God; never shall he go out of it, and I will write on him the name of my God, and the name of the city of my God, the new Jerusalem which comes down from my God out of heaven, and my own new name. He who has an ear, let him hear what the Spirit says to the churches.’
Rev 3:21-22 He who conquers, I will grant him to sit with me on my throne, as I myself conquered and sat down with my Father on his throne. He who has an ear, let him hear what the Spirit says to the churches.’
Rev 12:11 And they have conquered him by the blood of the Lamb and by the word of their testimony, for they loved not their lives even unto death.
Rev 21: 7-8 **He who conquers ** shall have this heritage, and I will be his God and he shall be my son. But as for the cowardly, the faithless, the polluted, as for murderers, fornicators, sorcerers, idolaters, and all liars, their lot shall be in the lake that burns with fire and sulphur, which is the second death."
Finally, I would suggest that you relentlessly hammer home the fact that everything is by God’s grace and that God’s grace goes out in power. In this regard refer him to:
Isaiah 55:11
so shall my word be that goes forth from my mouth; it shall not return to me empty, but it shall accomplish that which I purpose, and prosper in the thing for which I sent it.
2 Cor 3:5-6
Not that we are competent of ourselves to claim anything as coming from us; our competence is from God, who has made us competent…
1 Cor 10:13
God is faithful, and he will not let you be tested beyond your strength, but with the testing he will also provide the way out so that you may be able to endure it.
Eph 3:16
I pray that, according to the riches of his glory, he may grant that you may be strengthened in your inner being with power through his Spirit,
Eph 3:20
Now to him who by the power at work within us is able to accomplish abundantly far more than all we can ask or imagine,
2 Tim 1:7
for God did not give us a spirit of cowardice, but rather a spirit of power and of love and of self-discipline.
2 Tim 3:2- 5
For people will be lovers of themselves, … lovers of pleasure rather than lovers of God, holding to the outward form of godliness but denying its power.
John 15:5
I am the vine, you are the branches. Those who abide in me and I in them bear much fruit, because apart from me you can do nothing.
There is still more that can be said, but this is enough to start with. Keep us posted on how things are going, but remember that it is the Holy Spirit that does the heavy lifting.