You feel it, don't you?
That shame of presumption when asking God for this or that.
You know you don't deserve it.
How is it we feel presumptuous to ask of a Father who in the most staggering act of all time and eternity gave us His Son, opened to us the riches of His glory, and promised to freely give us all things?
That presumption we feel when asking of the Lord is a learned attitude. It's taught by parents and religion and, yeah, the liar. It's unconsciously permitted and perpetuated by ourselves.
If we heard rightly, Jesus set the ceiling on what we're permitted to ask of the Father in His name. He specifically stated, 'anything', 'whatever', 'ask what you will' - and it shall be given to you. For by this is my Father glorified.
Nobody said anything about deserving it. It's all about our God and Father who loves, who loves, who loves to give good gifts to His children.
See how great a love the Father has bestowed on us, that we would be called children of God; and such we are.
If your presumption causes you to shrink back from approaching the Father, what then are you presuming? That you must somehow be worthy, first? Come on. Let's just die to that whole notion, and live toward a Father whose generosity exceeds by ten thousand our imagination's furthest borders.
Such presumption yields to the lie that excludes us from Abba's extreme benevolence. It robs us of the posture of simple childlike faith to believe, to ask, and to expect from our Father whose good pleasure it is to lavish upon us His Spirit, His Kingdom, and to fulfill the yearnings of our heart.