Man's Chief End and Happiness (Thomas Boston)

1 Corinthians 10:31

“Whether therefore ye eat, or drink, or whatsoever ye do, do all to the glory of God.” 

 Behold the excellency of man above other creatures on earth! He is made for a noble end, to glorify and enjoy God, while other creatures were made for him. How sad it is, that men should thus forget their dignity, and turn slaves to those creatures which were made to serve them! And how deplorable and lamentable is it, that men, in place of making God their ultimate end, and placing their chief happiness in him, should make their belly, their lust and idols, their God, and place their chief felicity in the gratification of sensual and brutish pleasures; as the drunkard does in his bottle, the unclean person in his whore, the miser in his wealth, and the ambitious man in the titles of honor. Alas! Our hearts by nature are set on the earth that we tread upon, and our desires reach up to those things that we should make stepping-stones of. Let us earnestly implore divine grace to cure this disorder of our hearts, and give them a bias to more excellent things, and the enjoyment of that which will survive the grave, and not perish with the wrecks of time, and the dissolution of the world.

The soul of man is immortal, seeing to enjoy God forever is its ultimate and supreme happiness. God is immortal, and so must the soul be too, which can never be satisfied but in this never-dying being. The body too must rise again, seeing God is the God and portion of the whole man. Now, God is not the God of the dead, but of the living. Can that thinking and immaterial substance which eagerly desires happiness, and can find it no where but in the immortal God, perish with the body, and all its thoughts and desires be extinguished in the grave? No; its chief happiness will subsist forever, and so will the soul too. And both soul and body, which were united to God here, shall continue to be united to him forever, after the resurrection. Let us then seek to be united to God here, that we may be happy with and in him forever.

 When God and the creature come in competition, we must renounce the creature, and cleave to God only, Luke 14:33. God is the chief good, and to glorify and adhere to him at all times, and in all cases, and amidst all trials, is our great duty, a duty absolutely required of us. If we are reduced to the dilemma, that we must either give up with the creature, or any worldly goods or possessions, or even life itself, or give up with and deny God and his cause, we must give up with and abandon the former, and not prefer them to the glory of God, which we ought always to study as our main end, and account our chief happiness and joy.

Lastly, Let this then be your main and chief work, to glorify God, and to seek to enjoy him. And hence see the absolute need of Christ, and faith in him; for there is no glorifying of the Father without the Son, 1 John 2:23. and no enjoying of God, but through him. No sacrifice is or can be accepted, unless offered upon this altar; and there is no coming into the chamber of presence, but as introduced by Christ. 

Thomas Boston, "Of Man's Chief End and Happiness"

http://the-highway.com/

Psalms 73:25,26

“Whom have I in heaven but thee? and there is none upon earth that I desire beside thee.

My flesh and my heart faileth: but God is the strength of my heart, and my portion for ever."