And these signs shall follow them that believe; In my name shall they cast out devils; they shall speak with new tongues;To understand Christ, one must first understand these signs point to supernatural fulfillment by the power of the Holy Spirit through the name of Christ. Signs are gifts through the Holy Spirit that Christ gave to the church "bearing them witness, both with signs and wonders, and with diverse miracles, and gifts of the Holy Ghost, according to His own will." These supernatural signs are gifts of the Holy Spirit according to the will of God.
Mr 16:15 And he said unto them, Go ye into all the world, and preach the gospel to every creature.
Mr 16:16 He that believeth and is baptized shall be saved; but he that believeth not shall be damned.
Mr 16:17 And these signs shall follow them that believe; In my name shall they cast out devils; they shall speak with new tongues;
Mr 16:18 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.
Mr 16:19 ¶ So then after the Lord had spoken unto them, he was received up into heaven, and sat on the right hand of God.
Mr 16:20 And they went forth, and preached every where, the Lord working with them, and confirming the word with signs following. Amen.
Heb 2:3 How shall we escape, if we neglect so great salvation; which at the first began to be spoken by the Lord, and was confirmed unto us by them that heard him;
Heb 2:4 God also bearing them witness, both with signs and wonders, and with divers miracles, and gifts of the Holy Ghost, according to his own will?
1Co 12:4 Now there are diversities of gifts, but the same Spirit.
1Co 12:5 And there are differences of administrations, but the same Lord.
1Co 12:6 And there are diversities of operations, but it is the same God which worketh all in all.
1Co 12:7 But the manifestation of the Spirit is given to every man to profit withal.
1Co 12:8 For to one is given by the Spirit the word of wisdom; to another the word of knowledge by the same Spirit;
1Co 12:9 To another faith by the same Spirit; to another the gifts of healing by the same Spirit;
1Co 12:10 To another the working of miracles; to another prophecy; to another discerning of spirits; to another divers kinds of tongues; to another the interpretation of tongues:
1Co 12:11 But all these worketh that one and the selfsame Spirit, dividing to every man severally as he will.
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.
Are you able to "take up serpents; and if they drink any deadly thing, cast out devils, speak in new tongues "
If not then according to those verses you are not saved