Jesus contrasts God the Father with us in a simple tale: a human father refuses to give his child a stone when the child asks for bread. Even though the human father is ‘evil’ — imperfect, foolish, wayward, rebellious — he knows how to give good things to his offspring. Jesus says:
“If you then, who are evil, know how to give good gifts to your children, how much more will the heavenly Father give the Holy Spirit to those who ask him!”
Jesus seeks to convince us that God is the perfect Giver! The Father’s gifts to us are always good! God the Father’s most perfect gift to us is His own Holy Spirit. Compared to the gift of bread the human father gives, the gift of God the Holy Spirit outshines beyond our understanding.
So, when you ask God for His Holy Spirit, expect this perfect gift. Jesus says this expectation should be natural since you know God is a much better parent than you are.