Prayer is the opening of the heart to God as to a friend. Not that it is necessary in order to make known to God what we are, but in order to enable us to receive Him. Prayer does not bring God down to us, but brings us up to Him. When Jesus was upon the earth, He taught His disciples how to pray. He directed them to present their daily needs before God, and to cast all their care upon Him. And the assurance He gave them that their petitions should be heard, is assurance also to us. Steps to Christ, p. 94.
Be anxious for nothing, but in everything by prayer and supplication with thanksgiving let your requests be made known to God. And the peace of God, which surpasses all comprehension, shall guard your hearts and your minds in Christ Jesus. Phil. 4:6-7