How to be Men & Women After God's Own Heart
1 Samuel 13:14
Why was David a "Man after God's own Heart"? How David dealt with his sin may be one of the reasons.
A quick review of Matthew 5:3:
The Beatitudes - Jesus is talking about being spiritually poor.
Mourning is not something that is unique to Christians.
Men mourn for many reasons: death, compassion, loneliness, etc
2 Corinthians 7:10-11