Philippians 4:6 

Do not be anxious about anything, but in everything by prayer and supplication with thanksgiving let your requests be made known to God.

John 15:7 

If you abide in me, and my words abide in you, ask whatever you wish, and it will be done for you.

Mark 11:24 

Therefore I tell you, whatever you ask in prayer, believe that you have received it, and it will be yours.

1 Thessalonians 5:17 

Pray without ceasing,

Romans 8:26

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.

Matthew 6:6

But when you pray, go into your room and shut the door and pray to your Father who is in secret. And your Father who sees in secret will reward you.

Matthew 6:7 

“And when you pray, do not heap up empty phrases as the Gentiles do, for they think that they will be heard for their many words.