It is self explanatory but not. Pope Benedict’s book Jesus of Nazareth shows that the sermon on the mount is Jesus giving his own Torah, and that it points not just to our own inner being but to Jesus himself. The qualities listed there are the qualities of Jesus himself, and thus the qualities we as Christians should want as well. If I may, I recommend you read that book if you have time.
Jesus of Nazareth: From the Baptism in the Jordan to the Transfiguration
Blessed are the poor in spirit: for theirs is the kingdom of heaven. (Verse 3)
A reminder that material blessings are not to be cherished, but to be ready to give them up in a moments notice for God. It’s not necessary to be in poverty, but to be of the same spirit of one who is. To give thanksgiving to God for everything in the same manner a poor man might for the only piece of bread he might have. To keep your spirit in this place.
Blessed are the meek: for they shall possess the land. (Verse 4)
An allusion to Psalm 36:11, but instead of referring to the promised land of Israel, Jesus is referring to the promised Kingdom of God. That he who is meek and bows down humbly before God, obeying him and doing his will, will inherit and keep the Kingdom (get to Heaven.)
Blessed are they who mourn: for they shall be comforted. (Verse 5)
This points back to Ezekiel where the three men are coming through the temple that has been corrupted. The first man is told to go through and mark those who are mourning the corruption with an X(or a cross?) that they will be spared. Those who mourn the evil of the world, the corruption of God’s creation, and the temples of God (the hearts of men) will be comforted. Those who do not mourn are not promised anything. (It’s not asking us to live a life of sorrow, but to rightly mourn evil and it’s influence in our world.)
Blessed are they that hunger and thirst after justice: for they shall have their fill. (Verse 6)
This one is pretty self explanatory. As Christians we are to continually move our lives towards the will of God. Seeking to change ourselves and our world to follow the justice that God has prescribed. To always grow in morality and faith.
Blessed are the merciful: for they shall obtain mercy. (Verse 7)
This reminds us that from that same desire for justice, we shall also desire mercy. Both corporeal and spiritual. Forgive others or you will not be forgiven. “what you do for the least of these you have done for me.”
Blessed are the clean of heart: for they shall see God. (Verse 8)
Intentions. We are reminded that our intentions are what make our motions worth something. That when our heart is clean, not just our actions… then we shall see God. A reminder of purgation, a reminder to avoid sin, and to not just go through the motions… but to truly love God and our fellow man.
Blessed are the peacemakers: for they shall be called the children of God. (Verse 9)
This reminds us it’s not just about ourselves… but about everyone else. We are not just to live a life of peace, but to help spread that peace. To help maintain peace between our friends, families, and nations. To be a peacemaker isn’t just between you and others, but a community endeavor.
Blessed are they that suffer persecution for justice’ sake, for theirs is the kingdom of heaven. (Verse 10)
A reminder that if we suffer for God’s sake, for justice, it is really a blessing. That we should rejoice from that suffering because it means we are walking the right path.
As I said at the start, all of these also point to Jesus himself. He had all of these qualities… and He is our Sabbath… He is our way of emulating God, so by doing them… we emulate Christ… which helps bring the Kingdom of God (Christ himself) into our hearts and minds.
So what I think it means is specifically that God is calling you to emulate Him. That He wants you to start here, and follow the Beatitudes… and work your way back to full communion with him and his Church.