"Christians simply do not realize the great spiritual danger that surrounds them when they touch the world. There is a spiritual force behind this world scene which, by means of things that are in the world, is seeking to enmesh us in its system. God is building up His Church to its consummation in the universal reign of Christ. Simultaneously His rival is building up this world system to its vain climax in the reign of the antichrist. How watchful we need to be lest at any time we are found helping Satan in the construction of that ill-fated kingdom. When we are faced with the alternatives and a choice of ways confronts us, the question is: Is this of this world, or of God? For since there is only one conflict in the universe, then whenever two conflicting courses lie open to us, the choice at issue is never a lesser one than: God or Satan?"
Watchman Nee
"Try this recipe, O believer, whenever you are sad of heart and in heaviness of spirit. Forget yourself and your little concerns and seek the welfare and prosperity of Zion. Pray for the peace of Jerusalem and your own soul will be refreshed."
Charles Spurgeon