What are the Heights, and Depths, and Lengths, of Human Science

What are the heights, and depths, and lengths, of human science, with all the boasted acquisitions of the brightest genius of mankind! Learning and science can measure the globe, can sound the depths of the sea, can compass the heavens, can mete out the distances of the sun and moon, and mark out the path of every twinkling star for many ages past, or ages to come; but they cannot acquaint us with the way of salvation from this long, this endless distress. What are all the sublime reasonings of philosophers upon the abstruse and most difficult subjects? What is the whole circle of sciences which human wit and thought can trace out and comprehend? Can they deliver us from the guilt of one sin? Can they free us from one of the terrors of the Almighty? Can they assuage the torment of a wounded spirit, or guard us from the impressions of divine indignation? Alas, they are all but trifles in comparison of this blessed Gospel, which saves us from eternal anguish and death.

It is the Gospel that teaches us the holy skill to prevent this worm of conscience from gnawing the soul, and instructs us how to kill it in the seed and first springs of it, to mortify the corruptions of the heart, to resist the temptations of Satan, and where to wash away the guilt of sin. It is this blessed Gospel that clearly discovers to us how we may guard against the fire of divine wrath, or rather how to secure our souls from becoming the fuel of it. It is this Book that teaches us to sprinkle the blood of Christ on a guilty conscience by faith, by receiving Him as sincere penitents, and thereby defends us from the angel of death and destruction. This is that experimental philosophy of the saints in Heaven whereby they have been released from the bonds of their sins, have been rescued from the curse of the law, and have been secured from the gnawing worm and devouring fire.”

― Isaac Watts (17 July 1674 – 25 November 1748, English Congregational minister, hymn writer, theologian, and logician. The World to Come (Great Awakening Writings).