Who in the days of his flesh, when he had offered up prayers and supplications with strong crying and tears unto him that was able to save him from death, and was heard in that he feared;
Praying is connecting to God in heaven. When we need the power of heaven to come into our lives, we pray. Prayer brings peace, joy, and wisdom.
Instead of complaining, prayer is better by asking God and talking to Him as our father, by sharing our feelings and hearts to Him, through this we can see the power of God in prayer.