Romans 8:26 (ESV) — 26 Likewise the Spirit helps us in our weakness. For we do not know what to pray for as we ought, but the Spirit himself intercedes for us with groanings too deep for words.

Acts 2:1–13 (ESV) — 1 When the day of Pentecost arrived, they were all together in one place. 2 And suddenly there came from heaven a sound like a mighty rushing wind, and it filled the entire house where they were sitting. 3 And divided tongues as of fire appeared to them and rested on each one of them. 4 And they were all filled with the Holy Spirit and began to speak in other tongues as the Spirit gave them utterance. 5 Now there were dwelling in Jerusalem Jews, devout men from every nation under heaven. 6 And at this sound the multitude came together, and they were bewildered, because each one was hearing them speak in his own language. 7 And they were amazed and astonished, saying, “Are not all these who are speaking Galileans? 8 And how is it that we hear, each of us in his own native language? 9 Parthians and Medes and Elamites and residents of Mesopotamia, Judea and Cappadocia, Pontus and Asia, 10 Phrygia and Pamphylia, Egypt and the parts of Libya belonging to Cyrene, and visitors from Rome, 11 both Jews and proselytes, Cretans and Arabians—we hear them telling in our own tongues the mighty works of God.” 12 And all were amazed and perplexed, saying to one another, “What does this mean?” 13 But others mocking said, “They are filled with new wine.”

Acts 2:4 (ESV) — 4 And they were all filled with the Holy Spirit and began to speak in other tongues as the Spirit gave them utterance.

Acts 10:44–46 (ESV) — 44 While Peter was still saying these things, the Holy Spirit fell on all who heard the word. 45 And the believers from among the circumcised who had come with Peter were amazed, because the gift of the Holy Spirit was poured out even on the Gentiles. 46 For they were hearing them speaking in tongues and extolling God. Then Peter declared,

Acts 19:6 (ESV) — 6 And when Paul had laid his hands on them, the Holy Spirit came on them, and they began speaking in tongues and prophesying.

1 Corinthians 14:14–15 (ESV) — 14 For if I pray in a tongue, my spirit prays but my mind is unfruitful. 15 What am I to do? I will pray with my spirit, but I will pray with my mind also; I will sing praise with my spirit, but I will sing with my mind also.

1 Corinthians 13:8–9 (ESV) — 8 Love never ends. As for prophecies, they will pass away; as for tongues, they will cease; as for knowledge, it will pass away. 9 For we know in part and we prophesy in part,

1 Corinthians 14:39 (ESV) — 39 So, my brothers, earnestly desire to prophesy, and do not forbid speaking in tongues.

1 Corinthians 14:32 (ESV) — 32 and the spirits of prophets are subject to prophets. 

Acts 2:4 (ESV) — 4 And they were all filled with the Holy Spirit and began to speak in other tongues as the Spirit gave them utterance.

Luke 11:9–13 (ESV) — 9 And I tell you, ask, and it will be given to you; seek, and you will find; knock, and it will be opened to you. 10 For everyone who asks receives, and the one who seeks finds, and to the one who knocks it will be opened. 11 What father among you, if his son asks for a fish, will instead of a fish give him a serpent; 12 or if he asks for an egg, will give him a scorpion? 13 If you then, who are evil, know how to give good gifts to your children, how much more will the heavenly Father give the Holy Spirit to those who ask him!”

1 Corinthians 1:27 (ESV) — 27 But God chose what is foolish in the world to shame the wise; God chose what is weak in the world to shame the strong;