Hello JC, all,
If you have the Visuddhimagga, you will find Metta in Chapter IX Description of Concentration --- The Divine Abidings -- pp. 321 to 340
Other links to the Benefits of practising Metta:-
AN 11.16 Metta (Mettanisamsa) Sutta - Discourse on Advantages of Loving-kindness
Translated from the Pali by Piyadassi Thera
Thus have I heard:
On one occasion the Blessed One was living near Savatthi at Jetavana at Anathapindika's monastery. Then he addressed the monks saying, "Monks." — "Venerable Sir," said the monks, by way of reply. The Blessed One then spoke as follows:
"Monks, eleven advantages are to be expected from the release (deliverance) of heart by familiarizing oneself with thoughts of loving-kindness (metta), by the cultivation of loving-kindness, by constantly increasing these thoughts, by regarding loving-kindness as a vehicle (of expression), and also as something to be treasured, by living in conformity with these thoughts, by putting these ideas into practice, and by establishing them. What are the eleven?
1. "He sleeps in comfort. 2. He awakes in comfort. 3. He sees no evil dreams. 4. He is dear to human beings. 5. He is dear to non-human beings. 6. Devas (gods) protect him. 7. Fire, poison, and sword cannot touch him. 8. His mind can concentrate quickly. 9. His countenance is serene. 10. He dies without being confused in mind. 11. If he fails to attain arahantship (the highest sanctity) here and now, he will be reborn in the brahma-world.
"These eleven advantages, monks, are to be expected from the release of heart by familiarizing oneself with thoughts of loving-kindness, by cultivation of loving-kindness, by constantly increasing these thoughts, by regarding loving-kindness as a vehicle (of expression), and also as something to be treasured, by living in conformity with these thoughts, by putting these ideas into practice and by establishing them."
So said the Blessed One. Those monks rejoiced at the words of the Blessed One.
http://www.accesstoinsight.org/tipitaka ... .piya.html" onclick="window.open(this.href);return false;
27. The Development of Loving-kindness {Iti 1.27; Iti 19}
This was said by the Lord...
"Bhikkhus, whatever grounds there are for making merit productive of a future birth, all these do not equal a sixteenth part of the mind-release of loving-kindness. The mind-release of loving-kindness surpasses them and shines forth, bright and brilliant.
"Just as the radiance of all the stars does not equal a sixteenth part of the moon's radiance, but the moon's radiance surpasses them and shines forth, bright and brilliant, even so, whatever grounds there are for making merit productive of a future birth, all these do not equal a sixteenth part of the mind-release of loving-kindness...
"Just as in the last month of the rainy season, in the autumn, when the sky is clear and free of clouds, the sun, on ascending, dispels the darkness of space and shines forth, bright and brilliant, even so, whatever grounds there are for making merit productive of a future birth, all these do not equal a sixteenth part of the mind-release of loving-kindness...
"And just as in the night, at the moment of dawn, the morning star shines forth, bright and brilliant, even so, whatever grounds there are for making merit productive of a future birth, all these do not equal a sixteenth part of the mind-release of loving-kindness. The mind-release of loving-kindness surpasses them and shines forth, bright and brilliant."
For one who mindfully develops
Boundless loving-kindness
Seeing the destruction of clinging,
The fetters are worn away.
If with an uncorrupted mind
He pervades just one being
With loving kindly thoughts,
He makes some merit thereby.
But a noble one produces
An abundance of merit
By having a compassionate mind
Towards all living beings.
Those royal seers who conquered
The earth crowded with beings
Went about performing sacrifices:
The horse sacrifice, the man sacrifice,
The water rites, the soma sacrifice,
And that called "the Unobstructed."
But these do not share even a sixteenth part
Of a well cultivated mind of love,
Just as the entire starry host
Is dimmed by the moon's radiance.
One who does not kill
Nor cause others to kill,
Who does not conquer
Nor cause others to conquer,
Kindly towards all beings —
He has enmity for none.
This too is the meaning of what was said by the Lord, so I heard.
http://www.accesstoinsight.org/tipitaka ... ml#iti-027" onclick="window.open(this.href);return false;
metta
Chris