Prayer: A Request to God

Prayer is a request to God; however, we can praise, rejoice, bless and thank Him.  We ought to glorify and magnify Him alone in prayer and address God alone in Christian prayer.  Here are the kinds of prayer in the Bible:

A Secret Prayer
Matthew 6:6 KJV

⁶ But thou, when thou prayest, enter into thy closet, and when thou hast shut thy door, pray to thy Father which is in secret; and thy Father which seeth in secret shall reward thee openly.

A Family Prayer 
Acts 10:2, 30 KJV

² A devout man, and one that feared God with all his house, which gave much alms to the people, and prayed to God alway.
³⁰ And Cornelius said, Four days ago I was fasting until this hour; and at the ninth hour I prayed in my house, and, behold, a man stood before me in bright clothing,

A Group Prayer
Matthew 18:20 KJV
²⁰ For where two or three are gathered together in my name, there am I in the midst of them.

A Public Prayer
1 Corinthians 14:14-17 KJV

¹⁴ For if I pray in an unknown tongue, my spirit prayeth, but my understanding is unfruitful.
¹⁵ What is it then? I will pray with the spirit, and I will pray with the understanding also: I will sing with the spirit, and I will sing with the understanding also.
¹⁶ Else when thou shalt bless with the spirit, how shall he that occupieth the room of the unlearned say Amen at thy giving of thanks, seeing he understandeth not what thou sayest?
¹⁷ For thou verily givest thanks well, but the other is not edified.