William Burkitt on Luke 11:9

Our Saviour here goes on to urge us to importunity and constancy in prayer; he bids us ask, seek, and knock, and assures us we shall be accepted, heard, and answered.

Here note,

1. That man is a poor indigent creature, full of wants, but unable to supply them.

2. As man is an indigent and insufficient creature, so God is an all-sufficient good, able to supply the wants, and to relieve the necessities, of his creatures.

3. That Almighty God stands ready to supply all our wants, not temporal only, but spiritual also, affording his grace, and the assistance of his Holy Spirit, to them that ask it.

4. If therefore we want the grace of God, and the asistance of his Holy Spirit, it is our own fault, and not God's; it is either for want of seeking, or for want of earnestness in asking; for our Saviour expressly assures us, that God denies it to none; but every one that asketh receiveth.