Eirēnikos appears only twice in the NT (Hebrews 12:11; James 3:17) and derives from eirēnē (G1515, peace). The adjective describes what produces or maintains peace. James 3:17 lists it as a characteristic of heavenly wisdom: 'The wisdom that comes from heaven is first of all pure; then peace-loving [eirēnikē], considerate, submissive, full of mercy and good fruit, impartial and sincere.' Hebrews 12:11 says that God's discipline 'produces a harvest of righteousness and peace [eirēnikon]' for those trained by it.
While eirēnē (peace) describes the state, eirēnikos describes the disposition and behavior that creates and sustains it. Jesus called the peacemakers 'sons of God' (Matthew 5:9, eirēnopoioi). The person of eirēnikos character is not a passive bystander to conflict but an active cultivator of reconciliation and harmony. In the community of God's people, this translates to a commitment to right relationships, forgiveness, and shalom. Romans 12:18 commands: 'If it is possible, as far as it depends on you, live at peace [eirēneuontes] with everyone.' The eirēnikos person embodies the character of the God of peace.