Psalms 145:6

Those who, under troubles and temptations, abound in fervent prayer, shall in due season abound in grateful praise, which is the true language of holy joy. Especially we should speak of God's wondrous work of redemption, while we declare his greatness. For no deliverance of the Israelites, nor the punishment of sinners, so clearly proclaims the justice of God, as the cross of Christ exhibits it to the enlightened mind. It may be truly said of our Lord Jesus Christ, that his words are words of goodness and grace; his works are works of goodness and grace. He is full of compassion; hence he came into the world to save sinners. When on earth, he showed his compassion both to the bodies and souls of men, by healing the one, and making wise the other. He is of great mercy, a merciful High Priest, through whom God is merciful to sinners.

And men shall speak of the might of thy terrible acts. If unobservant of other matters these acts of judgment shall seize their attention and impress their minds so that they must talk about them. Did not men in our Saviour's day speak of the falling tower of Siloam and the slaughtered Galileans? Are there not rumours of wars, when there are not even whispers of other things? Horrible news is sure to spread: under mercies men may be dumb, but concerning miseries they raise a great outcry. The force of dread is a power which loosens the tongue of the multitude: they are sure to talk of that which makes the ear to tingle and the hair to stand upright. While they are thus occupied with "fearsome facts", such as the drowning of a world, the destruction of the cities of the plain, the plagues of Egypt, the destruction at the Red Sea, and so forth, David would look at these affairs in another light, and sing another tune. And I will declare thy greatness. Those acts which were terrible deeds to most men were mighty deeds, or greatnesses to our holy poet: these he would publish like a herald, who mentions the titles and honours of his royal master. It is the occupation of every true believer to rehearse the great doings of his great God. We are not to leave this to the common converse of the crowd, but we are personally to make a declaration of what we have seen and known. We are even bound in deep solemnity of manner to warn men of the Lord's greatness in his terrible acts of justice: thus will they be admonished to abstain from provoking him. To fulfil this duty we are already bound by solemn obligations, and we shall do well to bind ourselves further by resolutions, "I will —God helping me, I will."