...Acts 10:44-47 While Peter yet spake these words, the Holy Ghost fell on all them which heard the word. [45] And they of the circumcision which believed were astonished, as many as came with Peter, because that on the Gentiles also was poured out the gift of the Holy Ghost. [46] For they heard them speak with tongues, and magnify God. Then answered Peter, [47] Can any man forbid water, that these should not be baptized, which have received the Holy Ghost as well as we?
As you can see by the above scripture they Holy Ghost fell upon gentiles and they spoke in tongues. The gift of the Holy Ghost was not just for the Apostles but for anyone who seeks for the gift.
The gifts are not the sole issue for the Christian. Salvation and the harvesting of souls IS. However, in order for a Christian to effectively and boldly bring the gospel message to a lost and dying world we need the gift of the Baptism of the Holy Ghost.
...Mark 16:15-18 And he said unto them, Go ye into all the world, and preach the gospel to every creature. [16] He that believeth and is baptized shall be saved; but he that believeth not shall be damned. [17] And these signs shall follow them that believe; In my name shall they cast out devils; they shall speak with new tongues; [18] They shall take up serpents; and if they drink any deadly thing, it shall not hurt them; they shall lay hands on the sick, and they shall recover.
...Mark 16:19-20 So then after the Lord had spoken unto them, he was received up into heaven, and sat on the right hand of God. [20] And they went forth, and preached every where, the Lord working with them, and confirming the word with signs following. Amen.
Did you see the part that says: "And these signs shall follow THEM THAT BELIEVE.." It doesn't say only the origional 12 apostles, it doesn't say only to the jew or only to this person, or only at all. It says them that believe. Then down in verse 20 is the reason WHY we have been given the gift of the Holy Ghost."Confirming the word with signs following."
Those 'signs' that followed them that believed were for the Apostles and the disciples of the Apostles.
None of those signs are valid today.
The reason the Apostles were given 'signs' were to prove that they were in fact Apostles (2Cor.12:12).
This was necessary until the completion of the New Testament Canon.
There are no more Apostles today, and those signs following those who believe at the end of Mark, do not occur in anyone who believes today.