When Friends Make Mistakes

It is one thing to make a mistake, and quite another thing not to admit it. People will forgive mistakes, because mistakes are usually of the mind, mistakes of judgment. But people will not easily forgive the mistakes of the heart, the ill intention, the bad motives, the prideful justifying cover-up of the first mistake. ― Stephen R. Covey, The 7 Habits of Highly Effective People

Your friends are those who repent for their sins, not those who dissemble in the face of their sins. Stick with the broken and contrite. -R.C. Sproul, Jr.

But he gives us more grace. That is why Scripture says: 

"God opposes the proud but shows favor to the humble." James 4:6

For those who exalt themselves will be humbled, and those who humble themselves will be exalted. Matthew 23:12