Forgive or Fail
There is no spiritual gift of criticism. There is discerning of spirits and word of knowledge but a critical spirit is no something any Christian should have.
We are commanded to be ambassadors of love. In fact, we are called to the kind of love that over looks wrongs done:
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 (KJV)
1 Corinthians 13 teaches us how powerful the love is that pleases God is:
2 And though I have the gift of prophecy, and understand all mysteries and all knowledge, and though I have all faith, so that I could remove mountains, but have not love, I am nothing. 3 And though I bestow all my goods to feed the poor, and though I give my body to be burned, but have not love, it profits me nothing. 4 Love suffers long and is kind; love does not envy; love does not parade itself, is not puffed up; 5 does not behave rudely, does not seek its own, is not provoked, thinks no evil; 6 does not rejoice in iniquity, but rejoices in the truth; 7 bears all things, believes all things, hopes all things, endures all things. 8 Love never fails. But whether there are prophecies, they will fail; whether there are tongues, they will cease; whether there is knowledge, it will vanish away. 1 Corinthians 13:2-8 (NKJV)
We really need to take this to heart and let love begin to rule our lives, especially if we call ourselves Christian because one of the major earmarks that tell us whether we are saved or not is that we love other believers.
1 John 3:14 (KJV) We know that we have passed from death unto life, because we love the brethren. He that loveth not his brother abideth in death.