How do we know regeneration is necessary for ceasing strife?

In order for strife to cease, a true change must occur within us, necessitating regeneration. As stated in Ezekiel 36:25-27, God promises to cleanse His people and give them a new heart and spirit. This transformative work is vital because our natural state, as seen in Romans 7, is one of internal conflict and strife due to the flesh. The old man loves contention, but through regeneration, God creates a new man that is aligned with His righteousness, thus removing the source of strife. Only in this new creation, the believer can find peace and exhibit harmony rather than conflict.