It CAN happen at your church. ALL embezzlers were trusted: that’s how they got the money. Even Christ had one bad ‘un in his twelve. “Can’t happen here” is saying your people never, ever, fall to temptation.
You really do need an audit of your financial procedures. No slam: allchurches do.
We are LOTS cheaper than a CPA audit ($299 – $699, with scholarships for the tiniest churches, vs $3k-10K+).
You will remove temptation, protect reputations, and prevent fraud.
You will also avoid the horrible troubles you would have if you found a trusted member stealing. ANYpastor having gone through this would tell you to hire us.