What’s the difference in praying in grace and out of grace. I am trying to discover when I have sinned venially or mortally. I went to mass a wile back and as we went through it I became aware of my conscience starting to bother me and then by the time mass was over I felt I was in grace again. Must’ve been some sin there. The other day I lied I didn’t have to and didn’t like it but I discovered that the grace felt like it immediately left. I don’t know if it’s venial or mortal.