Acts 1:15 in the King James Version of the Bible reads: "And in those days Peter stood up in the midst of the disciples, and said, (the number of names together were about an hundred and twenty,)"

This verse is the beginning of a new chapter in the book of Acts, as it follows the ascension of Jesus and sets the stage for the coming of the Holy Spirit at Pentecost. It is also a pivotal moment for the early Christian community, as they prepare to continue the ministry of Jesus and fulfill his command to spread the gospel to the ends of the earth.

The verse begins with the phrase, "And in those days," which suggests a specific time period. This is a reference to the period of waiting and preparation that the disciples experienced after the ascension of Jesus. The disciples were waiting for the promised Holy Spirit to come, as Jesus had told them in Acts 1:8, "But ye shall receive power, after that the Holy Ghost is come upon you: and ye shall be witnesses unto me both in Jerusalem, and in all Judaea, and in Samaria, and unto the uttermost part of the earth."

The focus then shifts to Peter, who is described as standing up "in the midst of the disciples." This demonstrates Peter's leadership within the group of believers, as he was often the spokesperson for the disciples in the Gospels and in the early chapters of Acts. Peter's role as a leader and teacher is an important theme throughout the book of Acts, as he plays a central role in the establishment and growth of the early church.

Peter's address to the disciples is significant in that it marks the beginning of their collective decision-making process. The verse goes on to mention "the number of names together were about an hundred and twenty," which signifies the size of the early Christian community at this time. This number is not just a simple headcount, but a symbol of the unity and solidarity of the believers as they awaited the arrival of the Holy Spirit.

The significance of the number 120 is also related to the symbolism of the number 12, which is a recurrent motif in the Bible. The number 12 represents completeness and is associated with the twelve tribes of Israel in the Old Testament and the twelve apostles in the New Testament. In this context, the 120 disciples represent the fullness and continuity of God's plan for the redemption of humanity through the spread of the gospel.

This verse also sets the stage for the crucial events that follow in the book of Acts, particularly the coming of the Holy Spirit at Pentecost. The mention of the number of disciples gathered together at this time foreshadows the outpouring of the Spirit and the subsequent growth and expansion of the early church. The unity and solidarity of the believers mentioned in this verse serve as a prelude to the unity and power that the early church would experience through the indwelling of the Holy Spirit.

In conclusion, Acts 1:15 marks a significant turning point for the early Christian community as they await the fulfillment of Jesus' promise to send the Holy Spirit. The verse highlights the leadership of Peter, the unity of the believers, and foreshadows the coming of the Spirit at Pentecost. It also sets the stage for the spread of the gospel and the growth of the early church. The significance of this verse lies in its role as a transitional moment between the earthly ministry of Jesus and the empowerment of the disciples to continue his work.