17 We for our part as men charge and teach you thus: but make not our building hay and stubble and chaff, lest we suffer loss, from our work being burnt up: but make our work gold, and silver, and precious stones! For it lies in me to speak, but in you to set your mind upon it, and in God to make perfect. Let us nerve our minds, and brace up our souls, and prepare our hearts. The race is for our soul: our hope is of things eternal: and God, who knows your hearts, and observes who is sincere, and who is a hypocrite, is able both to guard the sincere, and to give faith to the hypocrite: for even to the unbeliever, if only he give his heart, God is able to give faith. So may He blot out the handwriting that is against you, and grant you forgiveness of your former trespasses; may He plant you into His Church, and enlist you in His own service, and put on you the armour of righteousness: may He fill you with the heavenly things of the New Covenant, and give you the seal of the Holy Spirit indelible throughout all ages, in Christ Jesus Our Lord: to whom be the glory for ever and ever! Amen.
(To the Reader.)
These Catechetical Lectures for those who are to be enlightened you may lend to candidates for Baptism, and to believers who are already baptized, to read, but give not at all, neither to Catechumens, nor to any others who are not Christians, as you shall answer to the Lord. And if you make a copy, write this in the beginning, as in the sight of the Lord.
Source: Catechetical Lectures (New Advent)