What does the Bible say about the works of Christians?

In John 14:12, Jesus assures His disciples that those who believe in Him will do not only the same works He did but also greater ones, reflecting the extraordinary success of the Gospel in the hands of the apostles. This reference does not emphasize miraculous deeds in the same manner as Christ performed but highlights the greater number of conversions and the extensive reach of disciples' ministry compared to His earthly ministry, as evidenced by the Pentecost when three thousand were saved in a single day. Thus, the 'greater works' signify the expansion of the church and the transformative power of the Gospel through the work of the Holy Spirit.