Luke 11:9
And I say unto you, Ask, and it shall be given you; seek, and ye shall find; knock, and it shall be opened unto you.
And I say unto you, ask, and it shall be given you,.... This is said by Christ, to encourage to prayer, and importunity in it; that if any one asks of God, in the name of Christ, and in faith, whether it be bread for the body, or food for the soul; or any blessing whatever, whether temporal or spiritual, it shall be given; not according to their deserts, but according to the riches of the grace of God; who is rich unto all that call upon him, in sincerity and truth:
seek, and ye shall find: whether it be Christ, the pearl of great price, or God in Christ; or particularly, pardoning grace and mercy through Christ, or the knowledge of divine things; and both grace here, and glory hereafter, as men seek for hidden treasure; such shall not lose their labour, but shall enjoy all these valuable things, and whatever they are by prayer, and in the use of other means, seeking after:
knock, and it shall be opened to you; the door of mercy with God; the door of fellowship with Christ; the door of the Gospel, and the mysteries of it and of the Gospel dispensation and church state, into which is admission, to all that seek; and the door of heaven, into which there is entrance by the blood of Jesus: the several phrases denote prayer, the continuance of it, and importunity in it;
See Gill on "Matthew 7:7"