On the Anointing with oil in Confirmation: 

“This seal of the Holy Spirit marks our total belonging to Christ, our enrollment in His service forever, as well as the promise of divine protection in the great eschatological trial.”
~Catechism of the Catholic Church #1296

For Reflection:
What about me witnesses to the fact that I belong totally to Christ? What about me witnesses otherwise? How can I embrace the grace of Confirmation to become a soldier for Christ Jesus?

In Conversation With God Vol 2
Daily Meditations Lent and Easter 
Francis Fernandez-Carvajal
Pb 609 pgs
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SECOND WEEK OF LENT-MONDAY
13. CONSCIENCE THE LIGHT OF THE SOUL
13.1 Conscience throws light on all of one’s life.  It can be deformed and hardened.
Jesus compares the function of conscience in our life to that of the eye.  When your eye is sound, your whole body is full of light; but when it is not sound, your body is full of darkness.  Therefore be careful lest the light in you be darkness.  When the eye is healthy, things are seen as they are, undistorted.  A sick eye either does not see or it distorts reality; it deceives its own subject and he can come to think that events and people are in fact as his defective vision views them.