For what end is life bestowed upon the children of men? Why were we sent into the world? For one sole end, and for no other, to prepare for eternity. For this alone we live. For this, and no other purpose, is our life either given or continued. It pleased the all-wise God, at the season which he saw best, to arise in the greatness of his strength, and create the heavens and the earth, and all things that are therein. Having prepared all things for him, He “created man in his own image, after his own likeness.” And what was the end of his creation? It was one, and no other, — that he might know, and love, and enjoy, and serve his great Creator to all eternity.
Remember! You were born for nothing else. You live for nothing else. Your life is continued to you upon earth, for no other purpose than this, that you may know, love, and serve God on earth, and enjoy him to all eternity. Consider! You were not created to please your senses, to gratify your imagination, to gain money, or the praise of men; to seek happiness in any created good, in anything under the sun. All this is “waiting in a vain shadow;” is leading a restless, miserable life, in order to a miserable eternity. On the contrary, you were created for this, and for no other purpose, by seeking and finding happiness in God on earth, to secure the glory of God in heaven. Therefore, let your heart continually say, “This one thing I do,” — having one thing in view, remembering why I was born, and why I am continued in life, — “I press on to the mark.” I aim at the one end of my being, God; even at “God in Christ reconciling the world to himself.” He shall be my God for ever and ever, and my guide even unto death.
— John Wesley, Sermon #109 “What is Man?”