Matthew 5:9 affirms blessing to those who make peace where there is conflict. But it doesn’t always feel that way. Often the most sincere of peace-making initiatives explode into even greater war. Romans 12:18 both exhorts us to be peacemakers, but also comforts us for the times where the other party in the conflict resists all peace-making efforts.
If possible, so far as it depends on you, live peaceably with all.Romans 12:18 (ESV)
Make peace, and if it doesn’t work, make sure you’ve done all you can. If it works, then live in peace. If there is still conflict, then be at peace knowing that the conflict is no longer because of what you might have done, but is in spite of all you have done.
Are you currently in a conflict with another? Have you confess and asked forgiveness for your sins before you addressed their sins (Matt 7:1-6)? Have you cast your burden of reconciliation upon the Lord in prayer (Phil 4:6-7)? Have you sought help where needed (Gal 6:1-2)? Have you spoken to the other person (Matt 18:15)? Have you invented ways to show your goodwill and desire for peace (Rom 12:18)?
If any of the above has resulted in reconciliation, then continue living at peace with them. If there still remains conflict, and nothing remains that depends on you to make peace, then let the peace of God rule your heart as you live peaceably with them as far as it depends on you.