Demons hearing thoughts

I know only God can hear thoughts but this happened to me last night and want to know if its happened to others. My understanding of right now is demons can input thoughts into us then speak and react like we thought it and they reply to make it think they can hear our thoughts.

A few times I heard a voice saying its God and what caused me to believe this is I hear my relatives who are living respond to my thoughts and they time it perfectly to where I think im speaking to them through thought. But infact the demons have a whole script of thoughts to fill my head and reply to it. Basically the spirit said "iam that i am", " iam the God of Abraham's Isaac and Jacob" and I feel stuff happening to my body like physcial sensations. The voices also said he would heal my families illnesses (never happened) Then it said i did the unforgiveable sin which I know i havent. These voices are so convincing because I've believed and then because I practiced the occult and it messed with my vision I seen light coming from my chest in the middle of the night and I dont know what abilities these demons have to know if its God or not.

All im asking is has anyone experienced a voice pretending to be God. This all happened to me after 3rd eye meditations I heard voices in my head and its turned into this. Ive repented and stopped and begun a healthy prayer life. Also I always speak in my mind so never aloud so its so hard to know. Looking for Christian perspectives.