He performs miracles, seen and experienced by others; but His ability to orchestrate billions of acts that involve bullions of people is quite mind boggling. Just the things I experience alone in my life are amazing. Multiply that by billions. He uses non-believers unbeknownst to them and quite frankly most of what He does mist if us are unaware of. You would surprised how many timeanhe has kept you from danger, given you warnings, " You ought to go this way, so this, don't do that, guiding in mirenway than you think. We do hear His voice, a thought that pops into our head and eenthinkbit own self generated. Not all thoughts are self-generated, ornrexives by known outside sources, people, books and media. Sometimes that voice is God speaking to. One learns to sense His presence when He uses us or when He is just comforting or guiding and teaching. He chastises us, convicts. You known that when you feel guilt, because you are guilty.
"Do you not know that you are the Temple of the Holy Spirit?"
He lives in those who have been born again, baptized by the Holy Spirit..
So we commune with Him. He guides us personally, teaches us, comforts, edifies, sanctifies, give a us gifts, truth, loves us and grows our spirit. He does all these personal things in addition to using us to do His will, to love others, to serve, and generally accomplish His purpose and plan for all of us.
It sounds like you have not experienced the presence of God. Being born again is an enlightenment, a transformation from being blind to seeing spiritually . We are given eternal life and power, abilities we did not have before, spiritual gifts. These are not exclusive to Pentecostals, all believers receive gifts and the Holy Spirit.
Oh my, you need to pray and ask for the Holy Spirit. You doubt the power of God nor are you aware of God in your own life. He will confirm His presence, supernaturally effect change and purpose.