You can identify them by their fruit, that is, by the way they act. Can you pick grapes from thornbushes, or figs from thistles? Matthew 7:16
Yes, I suppose that their just might be a place for fruit inspectors within the body of Christ. Might be…
But there’s a major flaw in some thinking here. People are not cans that need to be pried open to have their fruit inspected. Are they? Neither are they Tupperware containers of different opacities whereby others can examine their fruit in degrees of transparency. Fruit grows and should be visible. If it’s not visible yet, it seems presumptuous to pry someone open to see if there are any fruit inside so as to make judgments regarding their spiritual state.
There is certainly a level or purposed, or intentional transparency needed for others to grow. ”Be imitators of me, brothers and sisters, and watch carefully those who are living this way, just as you have us as an example. For many live (about whom I often told you, and now say even with tears) as enemies of the cross of Christ.” Philippians 3:17-18
If one offends or sins against you directly, then it’s right to approach that person and discuss their “bad fruit.” Proverbs 25:9, Matthew 18:15 etc. But if the same person fails to recognize their offense or sin, then scripture also seems to indicate a bit of sanctioned prying.
So, do Christians have the right or obligation to pry into the lives of others? When?
Missionary in the Andes Mountains Cloud Forest Region of Ecuador. My last name, "Labrador," is the word that's used for "Vine Worker" in the Spanish Bible, and it's OK with me. 
Chris Jefferies on Leading Edge Missiology and Ecclesiology?
Jim Wright on Leading Edge Missiology and Ecclesiology?
Kirk Stephens on Leading Edge Missiology and Ecclesiology?
Should we pry? No.
2 Thessalonians 3:11
1 Timothy 5:13
Should we address sins which people do against us? Yes.
Matthew 18:15-17
15 “If your brother sins against you, go and show him his fault, just between the two of you. If he listens to you, you have won your brother over. 16 But if he will not listen, take one or two others along, so that ‘every matter may be established by the testimony of two or three witnesses.’ 17 If he refuses to listen to them, tell it to the church; and if he refuses to listen even to the church, treat him as you would a pagan or a tax collector.
Should we be a hypocrite and address some sin in someone else without first addressing it in others? No.
Matthew 7:1-7
Should we be patient and forgiving and loving when people sin? Yes.
1 Peter 4:8
Should we recognize who is God’s child and who is not, by their behavior? Yes.
1 John 3:7-10
Should we pray and encourage and help a brother when he confesses sin? Yes.
James 5:15-18
Should we exhort people to live corectly? Yes.
1 Timothy 5:1-2
Should we confront an elder who sins? yes.
1 Timothy 5:17-20
Should we try to bring someone back from wandering from the TRUTH? Yes.
James 5:19-20
Should we judge those within the church? Yes.
1 Corinthians 5
oops.
“without first addressing it in others” should be
“without first addressing it in ourselves”
fruit (good or bad) is obvious enough for the discerning eye not to require a pry bar for visibility.
Sometimes when a person is short of discerning they may start poking around more aggressively in attempts to discover & evaluate for themselves… not a good thing.
admonitions can feel somewhat like prying, when/where most often all things are already being made visible (except yet to the one being admonished?).
“background checks” now being used by some church organizations are example in “prying”.
Grace and truth.
Truth: If you have a problem of walking on my toes, mine included and I don’t say ‘ouch,’ be careful; or if I am a toe trodder, including yours, and you don’t say anything, we are not being helpful to each other.
I think, if we are authentically connected to others, it is not a question of ‘if’ we should address issues, but ‘when’ and ‘how’.
If we do not see issues with each other, I would submit we that the problem is that we are not authentically connected.
Grace and truth.
Truth: If you have a problem of walking on my toes, mine included and I don’t say ‘ouch,’ be careful; or if I am a toe trodder, including yours, and you don’t say anything, we are not being helpful to each other.
I think, if we are authentically connected to others, it is not a question of ‘if’ we should address issues, but ‘when’ and ‘how’.
If we do not see issues with each other, I would submit that the problem is that we are not authentically connected.
Its one thing to look at fruit already there, out in the open…but something entirely different to pry into someone’s life to check. It makes me think of planting a seed and then digging it up a day later to see why it hasn’t come up yet…always destined to fail and also will guarantee there will be no fruit!
If I felt someone was digging into my life uninvited, I’m outta there!
pauses us to consider…
If someone’s prying to see our fruit, why is what they’re looking for not more obvious to them?
Perhaps they are looking for their kind of fruit…blackberries, say, when it is season for raspberries.
Case in point…we discovered last fall that our 8-year-old bittersweet vines WERE producing fruit…we just thought they would be the classic red berries with the orange outer shell…all we had seen were pale-yellow berries, which turend out to be the outer shell before it had matured.
more than a decade ago, I lived for awhile among the fruit orchards of California’s San Juaquin [pronounced: whah-keen] Valley. In that place there is a time (2nd & 3rd year) where the shape of the trees will become more a focus for the laborers. However, the garden of God, our Husbandman, does not appear in neatly placed rows of uniformly-shaped trees. He seeks the ideal in an efficiency alien to the carnal mind.
We know that good fruit is somewhat narrowly defined [Galatians 5:22:23], while “rotten” or bad fruit more broadly. Also, for how fruit need remain to maturity. [Luke 8:14; John 15:16] A couple of years running with no good fruit in season, and the tree is cut down to make room for another. [Matthew 7:19; 21:19; Luke 13]
Rightly, there is an urgency. Denied water, light, or nutrients, and the tree faces a multiplied jeopardy. Where we do look for fruit, be looking with love; a commitment to care… to make appeal and to do as the vineyard-keeper says, “Let it alone, Sir, for this one year more, until I dig around it and put in fertilizer”. That is love. But to the fruitless tree, digging around could even seem a bit like “prying”? If you’re gonna dig, be prepared to add something truly good & helpful!