Would the lie be mortal in this situation:
There was a great opportunity for my sister’s friend’s agnotic conversion; her parents are Methodists through so it would be difficulter to convert her. I offered not doing this thing for 5 minutes to God. I think I said it like a promise, with I will and stuff like nodding-like. As a minute went I decided this was too hard and he would have to make the minutes go faster. He did. It changed to the next minute really soon I believe, that interval of one minute changed into like 40 at least on my clock which was encouraging. But I quit in the middle of the time I said I would do it. I think it was in my ability to do it the whole 5 minutes but I picked not to.
Would it be a mortal sin to pretty much lie to God in this situation.
I sorta especially said it to God the Father because lying to the Holy Spirit/Peter/the-church-there happened once in the bible, the guy who didn’t want to give his material wealth & lied saying he gave all he was supposed to, and the guy died. [Acts Chapter 5:3-14] But maybe that was just Peter’s decision for it to happen. So it was especially not to the Holy Spirit.