We are indwelt upon faith in Him. Each different believer has a different spiritual gift. Those gifts are spiritually discerned. Some spirtual phenomena might be accompanied by the spectacular, but too frequently those not mature might confuse the spectacular with spirtuality.
But then both Paul and Jesus declared the signs & wonders they performed as being legitmate grounds for believing their message! They obviously did not share your concern about those who were not spiritually mature! And in the narrative accounts where people receive the Holy Spirit, there is almost always some sort of accompanying sign or wonder, whether it be prophetic utterances, speaking in tongues, or something else. If these signs are not explicitly stated, the are implicit--like with Simon the Magician of Acts 8.
The important thing is to discern if the signs match the words. If we see someone who has a life filled with signs and wonders, and he preaches Jesus Christ come in the flesh and crucified, then I would have no problem believing this person to be a servant of God.
But if there is a person doing signs and wonders, and thereby claiming that they, themselves were god, then I would have a serious problem!