What about prayers of petition? Well, we are needy creatures and God has ordained that out needs shall be supplied from His benevolent hand. We should not be afraid to ask and ask largely. To ask largely of God is to honor Him. He is abundantly able to give and willing too. Giving does not impoverish Him, nor does withholding make Him rich. The prayer of petition should never be reckoned on an earthly basis. We should ask according to the riches of heaven.
For the Lord God is a sun and shield: the Lord will give grace and glory: no good thing will he withhold from them that walk uprightly. Psalm 84:11 KJV
Matthew 7:9-11 NKJV1