From
The Didache, chapter 10.
1 But after it has been completed, so pray ye.
2 We thank thee, holy Father, for thy holy name, which thou hast caused to dwell in our hearts, and for the knowledge and faith and immortality which thou hast made known unto us through Jesus thy Son; to thee be the glory for ever.
3 Thou, Almighty Master, didst create all things for the sake of thy name, and hast given both meat and drink, for men to enjoy, that we might give thanks unto thee, but to us thou hast given spiritual meat and drink, and life everlasting, through thy Son.
4 Above all, we thank thee that thou art able to save; to thee be the glory for ever.
5 Remember, Lord, thy Church, to redeem it from every evil, and to perfect it in thy love, and gather it together from the four winds, even that which has been sanctified for thy kingdom which thou hast prepared for it; for thine is the kingdom and the glory for ever.
6 Let grace come, and let this world pass away. Hosanna to the Son of David. If any one is holy let him come (to the Eucharist); if any one is not, let him repent. Maranatha. Amen.
7 But charge the prophets to give thanks, so far as they are willing to do so.