Ye have heard that it hath been said, An eye for an eye, and a tooth for a tooth: But I say unto you, That ye resist not evil: but whosoever shall smite thee on thy right cheek, turn to him the other also. - Matthew 5:38-39
There are at least two motives which should be sufficient to lead us to cultivate the grace of forbearance. One is that no insult can do us harm — unless we allow it to irritate us. If we endure even the sorest words, as Jesus endured His wrongs and revilings — they will not leave one trace of injury upon us. They can harm us only when we allow ourselves to become impatient or angry. We can get the victory over them and utterly disarm them of power to do us injury — by holding ourselves superior to them. The feeling of resentment will change to pity — when we remember that not he who is wronged — but he who does the wrong, is the one who suffers.
And to help in bearing with disagreeable people or those with unamiable qualities, there is nothing better than a sincere wish to do them good.
"Forbearing one another, and forgiving one another, if any man have a quarrel against any: even as Christ forgave you, so also do ye." - Colossians 3:13
"Finally, be ye all of one mind, having compassion one of another, love as brethren, be pitiful, be courteous: Not rendering evil for evil, or railing for railing: but contrariwise blessing; knowing that ye are thereunto called, that ye should inherit a blessing." - 1 Peter 3:8-9