Purpose is the reason for existence, the reason for being in a place at a particular time, and the people asking this question, that is the "our" is we believers.
So, as a believer what's the purpose we have now, is there anything to live for, give to and ought to be our focal point every day of our lives, whatever we do, wherever we are. Since we are all family, with the same spirit and the same mind of Christ, this purpose will be the only one available, all things will lead to it.
Concerning this question, our lord Jesus Christ gave is this instructions:
Mark 16:15 NLT
And then he told them, "Go into all the world and preach the Good News to everyone.
He gave this instruction collectively, that this is the reason for life now, we must ensure this with everything we have, wherever we find ourselves.
Matthew 28:19-20 NLT
Therefore, go and make disciples of all the nations, baptizing them in the name of the Father and the Son and the Holy Spirit. [20] Teach these new disciples to obey all the commands I have given you. And be sure of this: I am with you always, even to the end of the age."
Going to the world, winning souls and establishing them.
All this because it is the will of God.
In the epistles, we received the revelation that this is the will of God:
1 Timothy 2:3-4 NLT
This is good and pleases God our Savior, [4] who wants everyone to be saved and to understand the truth.
The instructions were given to us there too:
2 Timothy 4:2 NLT
Preach the word of God. Be prepared, whether the time is favorable or not. Patiently correct, rebuke, and encourage your people with good teaching.
And our purpose as his bona-fide sons and daughters will be, to bring this to reality wherever we find ourselves, to give ourselves to it no matter how hard it might be.
This is our purpose, this is the reason to live, this is how you and i can be eternally focused, this is even the only way to get eternal rewards, because this is all that matters to God. So, whosoever you are, whatever your post or unit in church, among people and so on, you have been given this purpose in as much you are a believer and you ought to live by it.