EWTN Catholic Q&A
Question from Ken Kirkman on 03-07-2017:

Several days ago one of the moderators on WLOF Catholic radio stated that it is Catholic dogma that no one can know for sure whether or not they have received grace. How can such a teaching possible line up with 1 John 5:13 and Romans 8:16

Answer by Richard Geraghty on 04-09-2017:

Dear Ken,

We hope that we are in grace. We pray that we are in grace. That should be enough for us.

Dr. Geraghty