A true prophet doesn't delight in competing to reveal scripture. Neither is 'hell fire and brimstone' their first love. But, if you want to know why they're more likely to thunder damnation, consider following verses and you'll understand their fear.
And Lord hath sent unto you all his servants prophets, rising early and sending them; but ye have not hearkened, nor inclined your ear to hear. Jeremiah 25:4 Neither have we obeyed voice of Lord our God, to walk in his laws, which he set before us by his servants prophets. Daniel 9:10
God created man in his own image, in image of God created he him; male and female created he them. Genesis 1:27 Whoso sheddeth man's blood, by man shall his blood be shed: for in image of God made he man. Genesis 9:6 But they mocked messengers of God, and despised his words, and misused his prophets, until wrath of Lord arose against his people, till there was no remedy. 2 Chron. 36:16
Woe unto them that are with child, and to them that give suck, in those days! for there shall be great distress in land, and wrath upon this people. Luke 21:23 Unto them that are contentious, and do not obey truth, but obey unrighteousness, indignation and wrath, Tribulation and anguish, upon every soul of man that doeth evil, of Jew first, and also of Gentile. Romans 2:8-9 Let no man deceive you with vain words: for because of these things cometh wrath of God upon children of disobedience. Ephes. 5:6 For great day of his wrath is come; and who shall be able to stand? Rev. 6:17
Who shall separate us from love of Christ? shall tribulation, or distress, or persecution, or famine, or nakedness, or peril, or sword? Romans 8:35
There is no fear in love; but perfect love casteth out fear: because fear hath torment. He that feareth is not made perfect in love. 1 John 4:18
But they also have erred through wine, and through strong drink are out of way; priest and prophet have erred through strong drink, they are swallowed up of wine, they are out of way through strong drink; they err in vision, they stumble in judgment. Isaiah 28:7 Speak not evil one of another, brethren. He that speaketh evil of his brother, and judgeth his brother, speaketh evil of law, and judgeth law: but if thou judge law, thou art not a doer of law, but a judge. James 4:11 Judge not according to appearance, but judge righteous judgment. John 7:24 Examine yourselves, whether ye be in faith; prove your own selves. Know ye not your own selves, how that Jesus Christ is in you, except ye be reprobates? 2 Cor. 13:5 And if Christ be not raised, your faith is vain; ye are yet in your sins. 1 Cor. 15:17
Be not deceived; God is not mocked: for whatsoever a man soweth, that shall he also reap. Galatians 6:7 That blood of all prophets, which was shed from foundation of world, may be required of this generation; From blood of Abel unto blood of Zacharias, which perished between altar and temple: verily I say unto you, It shall be required of this generation. Luke 11:50-51 Judge not, and ye shall not be judged: condemn not, and ye shall not be condemned: forgive, and ye shall be forgiven. Luke 6:37 For with what judgment ye judge, ye shall be judged: and with what measure ye mete, it shall be measured to you again. Matthew 7:2 For which things' sake wrath of God cometh on children of disobedience. Col. 3:6