And, after you have suffered for a little while, the God of all grace who called you to his eternal glory in Christ will himself restore, confirm, strengthen, and establish you.

Our gospel

on the day when God will judge the secrets of human hearts, according to my gospel through Christ Jesus.

Now to him who is able to strengthen you according to my gospel and the proclamation of Jesus Christ, according to the revelation of the mystery that had been kept secret for long ages,

in that our gospel did not come to you merely in words, but in power and in the Holy Spirit and with deep conviction (surely you recall the character we displayed when we came among you to help you).

To

You lead me in the path of life; I experience absolute joy in your presence; you always give me sheer delight.

His master answered, 'Well done, good and faithful slave! You have been faithful in a few things. I will put you in charge of many things. Enter into the joy of your master.'

There are many dwelling places in my Father's house. Otherwise, I would have told you, because I am going away to make ready a place for you.

The glory you gave to me I have given to them, that they may be one just as we are one --

And if children, then heirs (namely, heirs of God and also fellow heirs with Christ) -- if indeed we suffer with him so we may also be glorified with him.

-- since the eyes of your heart have been enlightened -- so that you may know what is the hope of his calling, what is the wealth of his glorious inheritance in the saints,

exhorting and encouraging you and insisting that you live in a way worthy of God who calls you to his own kingdom and his glory.

If we endure, we will also reign with him. If we deny him, he will also deny us.

that is, into an inheritance imperishable, undefiled, and unfading. It is reserved in heaven for you,

And, after you have suffered for a little while, the God of all grace who called you to his eternal glory in Christ will himself restore, confirm, strengthen, and establish you.

I will grant the one who conquers permission to sit with me on my throne, just as I too conquered and sat down with my Father on his throne.

The city does not need the sun or the moon to shine on it, because the glory of God lights it up, and its lamp is the Lamb.

And there will no longer be any curse, and the throne of God and the Lamb will be in the city. His servants will worship him,

General references

So then, it does not depend on human desire or exertion, but on God who shows mercy.