“We see first the poor in spirit, which is the right attitude toward sin and which leads to mourning in verse 4. After you’ve seen your sinfulness and mourned, you’re meek with a sense of humility. Then you seek and hunger and thirst for righteousness. That manifests itself in mercy (v.7), in purity of heart (v.8), and in a peacemaking spirit (v.9). The result of being merciful and pure in heart and peacemaking is that you are reviled and persecuted and falsely accused. But when it’s all said and done, Jesus said you can rejoice and be glad (v.12), for a great reward awaits in heaven” (John MacArthur, The Only Way to Happiness).