III. He is a God of infinite mercy; and in the midst of all this wrath mercy is remembered. Let the sinners in Zion be afraid, that go on still in their transgressions, but let not those that trust in God tremble before him. For, 1. He is slow to anger (v. 3), not easily provoked, but ready to show mercy to those who have offended him and to receive them into favour upon their repentance. 2. When the tokens of his rage against the wicked are abroad he takes care for the safety and comfort of his own people (v. 7): The Lord is good to those that are good, and to them he will be a stronghold in the day of trouble. Note, The same almighty power that is exerted for the terror and destruction of the wicked is engaged, and shall be employed, for the protection and satisfaction of his own people; he is able both to save and to destroy. In the day of public trouble, when God's judgments are in the earth, laying all waste, he will be a place of defence to those that by faith put themselves under his protection, those that trust in him in the way of their duty, that live a life of dependence upon him, and devotedness to him; he knows them, he owns them for his, he takes cognizance of their case, knows what is best for them, and what course to take most effectually for their relief. They are perhaps obscure and little regarded in the world, but the Lord knows them, Ps. i. 6.