Blessed are they that mourn: for they shall be comforted.
All Commentaries on Matthew 5:4 Go To Matthew 5
Ambrose of Milan
AD 397
When you have done thus much, attained both poverty and meekness, remember that you are a sinner, mourn your sins, as He proceeds, “Blessed are they that mourn.” And it is suitable that the third blessing should be of those that mourn for sin, for it is the Trinity that forgives sin.