Acts 2:4
And they were all filled with the Holy Ghost, and began to speak with other tongues, as the Spirit gave them utterance.
Rom 8:26
Likewise the Spirit also helpeth our infirmities: for we know not what we should pray for as we ought: but the Spirit itself maketh intercession for us with groanings which cannot be uttered.
Matthew 3;1,11 (also Luke 3:16)
In those days came John the Baptist, preaching in the wilderness of Judaea…
I indeed baptize you with water unto repentance. but he that cometh after me is mightier than I, whose shoes I am not worthy to bear: he shall baptize you with the Holy Ghost, and with fire…
Here is my Personal testimony of receiving the Baptism of the Holy Ghost:
I was a new Christian. I had never heard of the baptism of the Holy Ghost (by the way, baptism means “whelm”, or immerse). I sat in the back row of a church service that believed in Baptism. After teaching, the pastor’s wife came all the way to back where I was sitting. She said ‘The Lord showed that if you go with this boy, he will help you be filled with the Holy Spirit! I went with him to the front of the church, he opened his bible to Acts 2:4 and began reading it to me. The next thing I know I am laughing and crying in the Spirit! I did the speaking as the Spirit gave the utterance! As I began to exercise this new Gift, the more fluency I had in praying in the Spirit!