“Moreover if thy brother shall trespass against thee, go and tell him his fault between thee and him alone: If he shall hear thee, thou hast gained thy brother.” – Matthew 18:15
It is a show of spiritual maturity to approach your brother who has offended you to tell him his trespasses. This is good as it promotes peaceful co-existence. There are some people who will rather harbour such grievance in their mind and begin to nurse it, the result of such attitude is hatred and malice, this could lead to other evils if not checked. As children of God we are advised to settle our differences as they come so as to allow the spirit of God to dwell in us. It is a spiritual danger and health risk to harbor grudges in our heart. St Paul admonished; “Brethren, be not children in understanding: Howbeit in malice be ye children, but in understanding be men” (1 Corinthians 14:20.)
On the other hand if our brother refuses to understand, we should bear with him and pray for him. The Bible teaches that as much as lies in us we should live peaceably with all men. – Romans 12:18; 1Peter 3:9.