Is even deliberately and intentionally entertaing/thinking blasphemous thoughts and dwelling on them for a little while still repentable?

I believe I may have commited blasphemy as purposely and consciously entertaing blasphemous thought and going on to lengths to ponder further on it but I immediately repented and asked forgiveness from Allah Subhanatallah Though it was intentional and deliberate but I was not able to think properly at the moment it was like i was frozen and just furthering this thought. It was like I was in control and, at the same time I had no control over it. Its hard for me to explain it but it felt like I knew it ot was wrong disgusting and vile and blasphemous but i was not able to control myself to stop thinking about it like I was actively thinking more about it like generating more scenarios in my mind.It did not felt subconscious but it seemed very apparent that I wanted to think about it but then i quickly snapped out of it and in my heart and also my intention was never to commit a blasphemy but i kept on intentionally and deliberately thinking about it.