1. (Not to say any more of the sins of omission; because it is easy to know them, when I have named the duties, which are done or omitted,) among the sins of commission, the first that I shall name is, blasphemy, as being the greatest; which is the reproaching of God: to speak contemptuously of God, or to vilify him, or dishonour him, by the denying of his perfections, and to debase him, by false titles, doctrines, images, resemblances, as likening him to man in any of our imperfections; any thing that is a reproaching of God is blasphemy. Such as Rabshakeh used when he threatened Hezekiah; and such as infidels and heretics use, when they deny his omnipresence, omniscience, government, justice, particular providence or goodness; and affirm any evil of him, as that he is the author of sin, or false of his word, or that he governeth the world by mere deceit, or the like.
2. Another sin of the tongue is, false doctrine, or teaching things false and dangerous as from God. If any falsely say, he had such or such a point by divine inspiration, vision, or revelation, that maketh him a false prophet. But if he only say falsely, that this or that doctrine is contained in the Scripture, or delivered by tradition to the church, this is but to be a false teacher; which is a sin greater or less according to the aggravations hereafter mentioned.
3. Another of the sins of the tongue is, an opposing of godliness indirectly, by false application of true doctrine, and an opposing of godly persons for the sake of godliness, and cavilling against particular truths and duties of religion; or indirectly opposing the truth or duty under pretence of opposing only some controverted mode or imperfection in him that speaketh or performeth it: a defending of those points and practices which would subvert or undermine religion: a secret endeavour to make all serious godliness seem a needless thing. There are many that seem orthodox, that are impious and malicious opposers of that truth in the application, which themselves do notionally hold, and positively profess.
4. Another great sin of the tongue is, the profane deriding of serious godliness, and the mocking, and jesting, and scorning at godly persons as such; or scorning at some of their real or supposed imperfections, for their piety sake, to make them odious, that piety through them might be made odious. When men so speak, that the drift and tendency of their speech is to draw men to a dislike of truth or holiness; and their mocks or scorns at some particular opinion, or practice, or mode, doth tend to the contempt of religion in the serious practice of it. When they mock at a preacher of the gospel, for some expressions or imperfections, or for truth itself, to bring him and his doctrine into contempt; or at the prayers and speeches of religious persons, to the injury of religion.
5. Another great sin of the tongue is, unjustly to forbid Christ's ministers to preach his gospel, or speak in his name; or to stand up against them and contradict, resist, and hinder them in the preaching of the truth; and, as Gamaliel calls it, "to fight against God," Acts v. 39. Yet thus they did by the apostles; ver. 46, "When they had called the apostles and beaten them, they commanded that they should not speak in the name of Jesus, and let them go." So Acts iv. 18, 19, "And they called them and commanded them not to speak at all, nor teach in the name of Jesus; but Peter and John answered and said unto them, Whether it be right in the sight of God, to hearken unto you more than unto God, judge ye; for we cannot but speak the things which we have seen and heard." 1 Thess. ii. 15, 16, "Who both killed the Lord Jesus, and their own prophets, and have persecuted us; and they please not God, and are contrary to all men. Forbidding us to speak to the gentiles that they might be saved, to fill up their sins alway: for the wrath is come upon them to the uttermost." As Dr. Hammond paraphraseth it, "And this generally is the ground of their quarrel to us, that in spite of their prohibition we preach to the gentiles."----
6. Another sin of the tongue is, profane swearing, either by God or by creatures: and also all light and unreverent use of the name and attributes of God, of which more afterwards.
7. Much more is perjury or forswearing a most heinous sin, it being an appealing to God, the author and defender of truth, to bear witness to an untruth, and to judge the offender; and so a craving of vengeance from God.
8. Lying also is a great and common sin of the tongue: of which more anon.
9. Another sin of the tongue is, hypocritical dissembling, which is worse than mere lying: when men's tongues agree not with their hearts, but speak good words in prayer to God, or conference with men, to cover evil intentions or affections, and to represent themselves to the hearers as better than they are.