Romans 12:18

Paul gives a command shaped by two honest qualifications. "Live peaceably with all men" is the aim, but he frames it with "if it be possible" and "as much as lieth in you." These are not loopholes for laziness; they are realistic acknowledgments that peace is not always within one person's power. Reconciliation takes two, and the other party may refuse.

So Paul places the responsibility squarely on the reader's own conduct: as far as it depends on you, be at peace. You cannot control another's response, but you can control whether you contribute to conflict, whether you pursue understanding, whether you keep the door open. The phrase "with all men" widens the circle beyond friends and fellow believers to include everyone -- even those who are difficult or hostile. This guards against two errors: the passivity that never tries for peace, and the false guilt that blames itself for conflicts it cannot resolve. The believer's task is to do everything in their own power to live at peace, and then to rest in having done so. For the reader, this is freedom: pursue peace wholeheartedly, but recognize where your responsibility ends and another's begins.