There is so much in the past, present and future that we do not understand. The Book of Revelation helps us understand who is in full and sovereign control, the victorious Lamb on his throne.
Knowing who God is - his character, his plans and why he wants us to pray - are essentials in building our understanding of prayer. One of the biggest questions about prayer is not 'How do you do it?' but rather 'Do we know who we are speaking to?'