Why Pray "in Jesus name"?
John 14:11-14 -- "Believe me when I say that I am in the Father and the Father is in me; or at least believe on the evidence of the works themselves. Very truly I tell you, whoever believes in me will do the works I have been doing, and they will do even greater things than these, because I am going to the Father. And I will do whatever you ask in my name, so that the Father may be glorified in the Son. You may ask me for anything in my name, and I will do it."
Jesus unashamedly states he is God! He has power and authority, and through prayer he is telling the disciples that whatever they ask of him, he will do for the glory of the Father! Pray is effective.
Philippians 4:6-7 -- "Do not be anxious about anything, 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 understanding, will guard your hearts and your minds in Christ Jesus"