Luke 12:49-50 New King James Version (NKJV)
49 “I came to send fire on the earth, and how I wish it were already kindled! 50 But I have a baptism to be baptized with, and how distressed I am till it is accomplished!
Matthew 3:11 New King James Version (NKJV)
11 I indeed baptize you with water unto repentance, but He who is coming after me is mightier than I, whose sandals I am not worthy to carry. He will baptize you with the Holy Spirit and fire.
1 Thessalonians 5:19 New King James Version (NKJV)
19 Do not quench the Spirit.
Acts 2:3 New King James Version (NKJV)
3 Then there appeared to them divided tongues, as of fire, and one sat upon each of them.