From the blinding deceitful nature of sin. The heart of man is full of sin and corruption, and that corruption is of an exceedingly darkening, blindi… - Jonathan Edwards

If a sight of Christ's outward glory might give a rational assurance of His divinity, why might not an apprehension of He is spiritual glory do so too?

There is room in heaven for a vast multitude, yea, room enough for all mankind that are or ever shall be; Luke xiv. 22, “Lord it is done as thou hast commanded, and yet there is room.” It is not with the heavenly temple as it often is with houses of public worship in this world, that they fill up and become too small and scanty for those that would meet in them, so that there is not convenient room for all. There is room enough in our heavenly Father’s house. This is partly what Christ intended in the words of the text, as is evident from the occasion of his speaking them.

Take away all the moral beauty and sweetness in the Word, and the Bible is left wholly a dead letter, a dry, lifeless, tasteless thing. By this is seen the true foundation of our duty, the worthiness of God to be so esteemed, honoured, loved, submitted to, and served, as He requires of us, and the amiableness of the duties themselves that are required of us. And by this is seen the true evil of sin; for he who sees the beauty of holiness must necessarily see the hatefulness of sin, its contrary. By this men understand the true glory of heaven, which consists in the beauty and happiness that is in holiness. By this is seen the amiableness and happiness of both saints and angels. He that sees beauty of holiness, or true moral good, sees the greatest and most important thing in the world, which is the fulness of all things, without which all the world is empty, no better than nothing, yea, worse than nothing. Unless this is seen, nothing is seen that is worth the seeing; for there is no other true excellency or beauty. Unless this be understood, nothing is understood that is worthy of the exercise of the noble faculty of understanding. This is the beauty of the Godhead, and the divinity of Divinity (if I may so speak), the good of the infinite Fountain of good; without which, God Himself (if that were possible) would be an infinite evil; without which we ourselves had better never have been; and without which there had better have been no being.