We must be careful with our comments. Although Saul sinned and fell forfeiting his anointing and kingship to David, David did not use his fall to assassinate his character (ex. sending emails in ALL CAPS) or retaliate when Saul tried to kill him. We must never under any circumstances use someone's fall to blast them out. I know of three people who did this in a church years ago against an elder and their lives and marriages went downhill from that point.

All christians, preachers, teachers, lay people, etc. are to refrain from blasphemy and evil-speaking. There is a scripture in Proverbs 24:17-18 that reminds us "rejoice not when thine enemy falleth, and let not thine heart be glad when he stumbleth, lest the Lord see it, and it displease him, and he turn away his wrath from him."