Chapter 7:7-12 Prayer and the Golden Rule

7:7 Ask, and it shall be given you; seek, and ye shall find; knock, and it shall be opened unto you:

Ask - seek - knock - These three words include the ideas of want, loss, and earnestness.
Ask: turn, beggar at, the door of mercy; thou art destitute of all spiritual good, and it is God alone who can give it to thee; and thou hast no claim but what his mercy has given thee on itself.
Seek: Thou hast lost thy God, thy paradise, thy soul. - Look about thee - leave no stone unturned there is no peace, no final salvation for thee till thou get thy soul restored to the favor and image of God.
Knock: Be in earnest - be importunate: and, if thou die in thy sins, where God is thou shalt never come.
Ask with confidence and humility.
Seek with care and application.
Knock with earnestness and perseverance.

7:8 For every one that asketh receiveth; and he that seeketh findeth; and to him that knocketh it shall be opened.
For everyone that asketh receiveth -For God is no respecter of persons; whoever makes application, be he a Jew, or a Gentile, rich or poor, bond or free, a man of great gifts, or mean parts, provided he asks aright. The promise is universal to all who obey the precept.

7:9 Or what man is there of you, whom if his son ask bread, will he give him a stone?
Will he give him a stone? - Will he not readily give him bread if he have it?

7:10 Or if he ask a fish, will he give him a serpent?
Or if he ask a fish, will he give him a serpent? - Fish and bread are mentioned, because these were common food.

7:11 If ye then, being evil, know how to give good gifts unto your children, how much more shall your Father which is in heaven give good things to them that ask Him?
If ye then being evil - As all mankind in general are, both by nature and practice: how much more shall your Father, which is in heaven; who is omniscient and omnipotent; who knows the persons and wants of his children, and what is proper for them, and is able to relieve them, being Lord of heaven and earth, give good things to them that ask him?

7:12 Therefore all things whatsoever ye would that men should do to you, do ye even so to them: for this is the law and the prophets.

Therefore all things whatsoever - These words are the epilogue, or conclusion of our Lord's discourse; the sum of what he had delivered. Therefore all things whatsoever ye would that men - This is a most sublime precept, and highly worthy of the grandeur and beneficence of the just God who gave it. The general meaning of it is this: 

Guided by justice and mercy, 

do unto all men as you would have them to do to you.