FAQ on the Christian Faith
We can't assure that one has received the indwelling of the Holy Spirit just because they speak in tongues. Even demon-possessed people can speak in tongues. You should know that devils could make people speak in strange tongues fluently under the name of Jesus Christ.
If we say that speaking in tongues is proof of the indwelling of the Holy Spirit, then this is definitely incorrect from a biblical standpoint and puts us into the sin of blaspheming against the Holy Spirit. 1 Corinthians 12:30 says, "Do all have gifts of healings? Do all speak with tongues? Do all interpret?" Because the Holy Spirit is God's Spirit, He can by no means be with sin and neither can He dwell in a person who has sin in his heart.
We should not believe that one has received the Holy Spirit just because he speaks in tongues, but should first examine if he has received the forgiveness of sin by believing in the gospel of the water and the Spirit. If someone thinks that he has received the Holy Spirit just because he has some kind of special experience, such as speaking in tongues, it could be that he is being tricked by a shrewd deception of Satan (2 Thessalonians 2:10). The Holy Spirit is a gift that is given by God to people who have received the forgiveness of sin through His words.
In answer to the second question, the Holy Spirit is God Himself and the Spirit of truth. Therefore, He works together with the gospel of the water and the Spirit. He does not work according to human will. He leads sinners to believe in the gospel of the water and the Spirit, teaches the truth to the righteous, and also quietly preaches the gospel, which is God's will, together with them. He doesn't come on people with fire-like emotions or irresistible vibration of bodies. God gave the Holy Spirit to the righteous, whose sins were blotted out by obeying the true gospel of the water and the Spirit. He taught them that they have become God's children. The Holy Spirit testifies in the hearts of the righteous that they have become sinless and completely righteous through the gospel of the water and the Spirit.
Therefore, if someone speaks in tongues but still has sin his heart, the spirit in him is definitely not the Holy Spirit, but the spirit of Satan. If you want to have the indwelling of the Holy Spirit in your heart, you should believe in the gospel of the water and the Spirit. Then the Lord will bless you with the indwelling of the Holy Spirit.