I love this passage from J.C. Ryle that I read on the J.C. Ryle Quotes blog.
Pray for yourselves—that you may know the Lord Jesus, and cleave to Him—that you may be kept from falling—that you may serve your generation—that you may be sober in prosperity, patient in trial, and humble at all times.
Pray for the congregation to which you belong—that the word of the Lord may have free course in it, and be glorified—that the household of faith may become stronger and stronger, and the household of unbelief weaker and weaker.
Pray for your country—that her ministers may preach the Gospel, and be sound in the faith—that her rulers may value the Bible, and govern according to it—and that so her candlestick may not be taken away.
And pray for your minister—that he may be strong to work, and willing to labor for your good, that all his sicknesses may be sanctified, and all his health given to the Lord—that he may be ever taught of the Spirit, and thus be able to teach others—that he may be kept faithful unto death, and so be ready to depart when he is called.
Let us all pray, one for the other—I for you, and you for me—and we shall be blessed in our deed!
We can never pray too much!