Devil - a slanderer, the arch-enemy of man's spiritual interest. He is called also "the accuser of the brethen" .
Isaiah 014:012 How art thou fallen from heaven, O Lucifer, son of the morning! how art thou cut down to the ground, which didst weaken the nations! 014:013 For thou hast said in thine heart, I will ascend into heaven, I will exalt my throne above the stars of God: I will sit also upon the mount of the congregation, in the sides of the north: 014:014 I will ascend above the heights of the clouds; I will be like the most High. 014:015 Yet thou shalt be brought down to hell, to the sides of the pit. Job 001:006 Now there was a day when the sons of God came to present themselves before the LORD, and Satan came also among them. 001:007 And the LORD said unto Satan, Whence comest thou? Then Satan answered the LORD, and said, From going to and fro in the earth, and from walking up and down in it. Revelation 20:010 And the devil that deceived them was cast into the lake of fire and brimstone, where the beast and the false prophet are, and shall be tormented day and night for ever and ever 1 Peter 005:008 Be sober, be vigilant; because your adversary the devil, as a roaring lion, walketh about, seeking whom he may devour: 005:009 Whom resist stedfast in the faith, knowing that the same afflictions are accomplished in your brethren that are in the world. 2 Corinthians 011:014 And no marvel; for Satan himself is transformed into an angel of light. 011:015 Therefore it is no great thing if his ministers also be transformed as the ministers of righteousness; whose end shall be according to their works. James 004:007 Submit yourselves therefore to God. Resist the devil, and he will flee from you.