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.

Mark 11:24 - Therefore I tell you, whatever you ask in prayer, believe that you have received it, and it will be yours.

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.