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Sarah O'Malley wrote:

Hi, guys —

  • Did I commit a sin if I had an impure thought and physically bad feeling after receiving
    Holy Communion?


  { Did I commit a sin if I had an impure thought and physically bad feeling after Holy Communion? }

Mike replied:

Dear Sarah,

You said:

  • Did I commit a sin if I had an impure thought and physical feeling after receiving
    Holy Communion?

No, you didn't. satan [small s] will always strive to screw up our spiritual life, so don't worry about it. Just maintain a warrior-like attitude, spiritually, especially in this culture.

The Rosary is an excellent weapon to use on a regular basis.

Although the bishops encourage the faithful to go to Confession on a regular basis (monthly), the only time one has to go to Confession (before receiving Holy Communion) is when they have committed a mortal sin (like one of a sexual nature). That said, it has to meet the criteria for being a mortal sin.

A mortal sin requires:

  • knowledge of what you are doing
  • knowledge that it is grievously wrong, and
  • giving full consent of the will to the sin.

or for short, for a sin to be mortal you must:

  1. really will it
  2. know it's wrong, and
  3. it must be a serious matter (See the Ten Commandments section of the CCC.)

If one of these criteria is missing, it is not a mortal sin.

As I said in another answer to a question:

When you fall, like I do, so many times, just get back up and, if it is a serious sin, go to Confession first, before receiving Communion at Sunday Mass and if you are not properly disposed to receive the Blessed Sacrament on any given Sunday, say a Spiritual Communion.

Spiritual Communion

O Lord Jesus, I believe that You are present in the Most Blessed Sacrament of the Altar.
I love you above all things, (optional: with all my mind, with all my heart, and with all my soul). I love you because you are infinitely good and worthy of all my love.

Since I cannot receive You now sacramentally, at least come spiritually into my heart.
I embrace myself entirely to You and unite myself wholly to You.
Never permit me to be separated from You.

Come Lord Jesus and glorify Yourself through my weak, broken body.


If one is having trouble discerning mortal sin from venial sin, they should consider finding a good, faithful Spiritual director who they can go to for guidance and advice.

I hope this helps,


Please report any and all typos or grammatical errors.
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