What are the signs that follow believers according to the Bible?

In Mark 16:17-18, Jesus says, 'These signs shall follow them that believe; In my name shall they cast out devils; they shall speak with new tongues; 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.' These signs were specific miracles given primarily to the apostles as a validation of their message and authority. They served to confirm the truth of God's Word as they preached. Today, while we do not seek miraculous signs as evidence of belief, Christian faith is characterized by a changed life, the fruits of the Spirit, and a profound understanding that every believer has the Holy Spirit empowering their witness.