A Sermon from the book, Sermons and Essays by the Tennents and their Contemporaries 
Our love to Him should begin on earth, as it shall be in heaven; for the bride taketh not by a thousand degrees so much delight in her wedding garment as she doth in her bridegroom; so we, in the life to come, howbeit clothed with glory as with a robe, shall not be so much affected with the glory that goeth about us, as with the Bridegroom’s joyful face and presence.
What a happy night was this to the poor shepherds, though exposed to the damps and darkness of midnight, and keeping their painful watches in the open field! An illustrious angel, clothed in light which kindled midnight into noon, came upon them, or suddenly hovered over them in the air, and the glory of the Lord, that is, a bright refulgent light, the usual emblem of his presence shone round about them. No wonder the poor shepherds were struck with horror, and overwhelmed at the sight of so glorious a phenomenon.
Does sin have dominion over me? Certain things are mentioned which leave the case doubtful; as when sin takes hold of the imagination, when it prevails in the affections, when there is a neglect of the means by which it is mortified, when a reservation is made in favor of any known sin, and when hardness of heart is manifested, III. Hardness of heart is specially considered, and distinguished into natural, judicial, and partial or comparative;
It is a love that does not rise upon any outward motive, or extrinsical consideration; it is a love rising from the exercise of a gracious frame of spirit, as the result of that union betwixt the head and the members: it would have Him, although, as long as it is within time, it never did behold Him.
It is time to be alarmed! It is time to tremble for the church of Christ! While the enemy is thus coming in like a flood, must not the Spirit of the Lord “lift up a standard against him” (Isa. 59:19)? How can it be expected that sinners will hearken to the voice of the Son of God when saints will not hearken? How can we hope that the world will regard what the church will not regard (Amos 6:12)? How few will be brought to the saving knowledge of Jesus unless the Lord revive the languid graces of His own people and pour out His Spirit upon His enemies?
How unreasonable then is it to despair of mercy; while this season, this opportunity of obtaining mercy is afforded; unless you are determined not to improve it. The precious privileges which you enjoy, while this season continues, render despair still more unreasonable. What walls are these which surround you? Are they not the walls of God’s house, a place where he has recorded his name, and respecting which he says, Wherever I record my name, there will I meet with you and bless you?
This is a season when persons are apt to indulge themselves in all manner of luxury: iniquity now abounds apace; nothing is scarcely to be seen but things of the greatest extravagance imaginable; not only for the necessities of the body, but to pamper it in lust, to feed its vices, to make it go on in sin, to be a means for gratifying our carnal appetite; and this is a means to make us forget the Lord of glory.