What are the greater works that Jesus talks about in John 14?

In John 14:12, Jesus tells His disciples they will do greater works than He did because He goes to the Father. This implies that while Jesus' earthly ministry included miraculous acts of healing and feeding, the greater works pertain to the transformational work of the gospel as it spreads through the apostles and subsequent believers. The impact of the gospel leading to salvation, both in individual lives and across cultures, signifies a greater magnitude—drawing many to faith and transforming lives eternally.