Nice good for thought here. it's funny how Christianity, which is (supposed) to be the ultimate religion, is fraught by so much controversy... From division amongst Christians to our jet setting MOGs... But insight shows that all these are fulfilling prophesies... na for this reason Bible tell us say Salvation dey personal.... Now to the question at hand, they are two different entities.... Baba God been create us with Free Will and subsequently a conscience... In the Old Testament especially prior to the 10 Commandments people served God in whatever way they deemed right, that na function of conscience.... The Holy Spirit didn't manifest until after Christ had returned to heaven.... The Holy Spirit is here to guide us in this dispensation... Weytin come be the difference you ask? Christians are supposed to live above to standards of the world, that isn't humanly possible.... Only by Grace through the Holy Spirit... conscience guides our "earthly" actions, the Holy Spirit, our spiritual.... Conscience go tell you make you share weytin you get, Holy Spirit go tell you to give everything out and believe in God..... The reason most Christians don't get answers to their prayers and keep jumping from pastor to pastor, ma because them no dey trust Baba fully.... Without faith, it is impossible to serve him.... Stay Blessed