When he heals people on the Sabbath, the relgio-political leaders of Israel accuse Jesus of breaking the law. Jesus' response to them brings out the spirit of the law. What exactly is that spirit?

Pentecostalism is a 20th century movement with a main focus on experiencing miraculous gifts of the Holy Spirit like speaking in tongues. Today many think the gift of tongues is to speak unintelligible words because that’s what people see in Pentecostal churches. But was that the case when the Early Church got this spiritual gift? First of all, what was the reason God gave such gifts to the believers? And what was the purpose of other miraculous gifts like healing and personal prophecies?