1Jn18 Little children, it is the last time: and as ye have heard that antichrist shall come, even now are there many antichrists; whereby we know that it is the last time.
19 They went out from us, but they were not of us; for if they had been of us, they would no doubt have continued with us: but they went out, that they might be made manifest that they were not all of us.
20 But ye have an unction from the Holy One, and ye know all things.
21 I have not written unto you because ye know not the truth, but because ye know it, and that no lie is of the truth.
22 Who is a liar but he that denieth that Jesus is the Christ? (he) is antichrist, that denieth the Father and the Son.
23 Whosoever denieth the Son, the same hath not the Father: (but) he that acknowledgeth the Son hath the Father also.
24 Let that therefore abide in you, which ye have heard from the beginning. If that which ye have heard from the beginning shall remain in you, ye also shall continue in the Son, and in the Father.
25 And this is the promise that He hath promised us, even eternal life.
26 These things have I written unto you concerning them that seduce you.
27 But the anointing which ye have received of Him abideth in you, and ye need not that any man teach you: but as the same anointing teacheth you of all things, and is truth, and is no lie, and even as it hath taught you, ye shall abide in Him.
28 And now, little children, abide in Him; that, when He shall appear, we may have confidence, and not be ashamed before Him at his coming.
29 If ye know that He is righteous, ye know that every one that doeth righteousness is born of Him.
3:1 Behold, what manner of love the Father hath bestowed upon us, that we should be called the sons of God: therefore the world knoweth us not, because it knew Him not.

Jn4:1 Beloved, believe not every spirit, but try the spirits whether they are of God: because many false prophets are gone out into the world. (Test your teachers and their spirit)
2 Hereby know ye the Spirit of God: Every spirit that confesseth that Jesus Christ is come in the flesh is of God:
3 And every spirit that confesseth not that Jesus Christ is come in the flesh is not of God: and this is that spirit of antichrist, whereof ye have heard that it should come; and even now already is it in the world.
4 Ye are of God, little children, and have overcome them: because greater is He that is in you, than he that is in the world.
5 They are of the world: therefore speak they of the world, and the world heareth them. (The world of flesh was brought by satan's pride and lies satan being the antichrist. the not christ.)

By these definitions satan is the ultimate one and only antichrist. Beware lest you be led into his camp by a belief not actually in the Living Word, but is really a doctrine of man, created by twisting the scriptures to form this belief. Twisting of scripture by scripture lawyers is a favorite pastime of Satan and his helpers.