It wasn’t as simple as just crossing another river. By law, no Roman general could lead armed troops into Rome. So when Julius Caesar led his 13th Legion across the Rubicon River and into Italy in 49 bc, it was an act of treason. The impact of Caesar’s decision was irreversible, generating years of civil war before Rome’s great general became absolute ruler. Still today, the phrase “crossing the Rubicon” is a metaphor for “passing the point of no return.”

Sometimes we can cross a relational Rubicon with the words we say to others. Once spoken, words can’t be taken back.…