There is someone in your life right now you are trying to read. A new hire, a business partner, a person you are starting to care about, or a friend who has begun to ask for more than they used to. Something in you wants to lean in, and something else is asking whether you should. You are trying to work out how to know if someone is trustworthy before you hand them something that cannot be taken back, because you have handed things over before and you remember what it cost.
I have spent a career making this call, in police work where the wrong read could get someone hurt, in leadership where it could sink a team, and in church where it could wound people who came looking for safety. I have been right often and wrong more than once. What I can tell you is that trustworthiness leaves evidence long before it is tested at scale, and most people who get burned saw the evidence and talked themselves out of it. So let me show you what to look for and how to look for it on purpose.
Watch How They Treat People Who Cannot Help Them
The first and most reliable sign is how a person handles someone who has nothing to offer them. Watch them with a waiter, a junior staffer, a receptionist, a person who made a mistake and cannot fix it. People perform for those who matter to their goals. They reveal themselves to those who do not. If someone is gracious to you and contemptuous to the person bringing the coffee, you are seeing the performance and the person in the same afternoon, and you should believe the second one.
Pay attention as well to how they talk about people who are not in the room. Someone who hands you private information about a third party is showing you what they will do with yours. Someone who takes credit that belonged to a colleague is showing you where your credit will go. The behavior you observe toward others is a forecast, and it is far more accurate than anything they say about themselves.
Check Whether Their Story Holds Under Small Questions
In investigations we learn early that liars are rarely caught on the big claim. They are caught on the details around it, because the big claim was rehearsed and the details were not. You can use the same principle gently. When someone tells you about their background, their reasons, or their past dealings, ask an ordinary follow-up question. Not an accusation, just curiosity. Trustworthy people answer easily, and their answers get more specific as you go. People with something to hide get vaguer, or irritated, or they change the subject with a joke.
Also notice whether the story changes over time. Write down, at least in your own memory, what someone told you the first time. When it comes up again a month later, see whether it matches. Honest people are consistent because they are reporting rather than composing. A story that keeps improving, or keeps shifting to fit the moment, is being written for you rather than told to you.
Test Trust in Small Increments Before You Need It
The doctrine I have carried through every job I have held is that trust should be tested, not assumed. Most people wait until circumstances test a relationship for them, and by then the stakes are whatever life happened to put on the table. You can do better than that. Test early and test small, while failure is cheap. Share a minor confidence and see whether it stays put. Ask for a small commitment and see whether it is kept without a reminder. Give them a chance to take a small advantage of you and see whether they take it.
Disagree with them once, on something that does not matter much, and watch what happens. This is one of the most revealing tests I know. A trustworthy person can hear that you see things differently and stay warm. An untrustworthy person either folds instantly to keep you happy, which tells you they will tell you whatever you want, or turns cold and finds a way to make you pay for it, which tells you what disagreement will cost when the stakes are real. Either way you have learned something for the price of one small conversation.
How to Know If Someone Is Trustworthy When Everything Looks Good
Some people pass every early test, and I want to be honest that this is where the hard cases live. Judas passed for three years. Ahithophel was David’s most trusted counselor right up until he was not. No method removes the risk entirely, and anyone who says otherwise has not been in the field. What you can do is keep the tests going as the stakes rise, and pay special attention to what happens the first time this person has something to gain by letting you down.
That first real moment of competing interest is the test that matters. Everything before it was low cost. When their advantage and your interest finally point in different directions, watch which way they go and how they explain it afterward. A trustworthy person absorbs the loss or comes to you openly to work it out. An untrustworthy person takes the gain and constructs a reason later. Whatever you see in that moment, believe it, because it is the most expensive evidence you will ever get and it will not be cheaper next time.
Do Not Talk Yourself Out of What You Saw
Here is the pattern I have seen more than any other. Someone notices something wrong, early, and then explains it away because they like the person, or need them, or have already invested too much to walk back. Weeks or years later, when the betrayal lands, they say they never saw it coming, and it is rarely true. They saw it coming and decided not to look. Your judgment was probably working fine. Your willingness to act on it was what failed.
So keep a habit of writing down what you notice, in plain words, at the time you notice it. A short note on your phone is enough. This does two things. It prevents your memory from softening the evidence later, and it forces you to state the concern clearly rather than letting it stay a vague unease you can dismiss. When the notes pile up in one direction, act on them. Slow the relationship, limit the access, ask the direct question. The cost of being cautious with a good person is small and recoverable. The cost of being careless with a bad one is not.
Go Deeper
If the person you are trying to read is a leader, someone with power over your work or your future, the signs are the same but the stakes are higher, and I wrote a book about how to serve under such a person wisely. It follows David through the years he spent under Saul, and it draws out how he read the man accurately and survived him: The Spirit of Saul.
Commissioner William Epps is an author and security leadership consultant with a background in law enforcement, fire service, private security, and federal government. His books are published through E.P.P.S. Method Publishing Co.
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