In the book of Acts, which event symbolizes the inclusion of the Gentiles into the new covenant?

The event in the book of Acts that symbolizes the inclusion of the Gentiles into the new covenant is the baptism of Cornelius.
Before this event, the early Christian community primarily consisted of Jewish believers. However, through a series of divine encounters, God made it clear that the message of salvation was not limited to the Jewish people, but also extended to the Gentiles.
Cornelius, a Roman centurion, was a Gentile who feared God and led a righteous life. In Acts chapter 10, Cornelius had a vision where an angel spoke to him and instructed him to send men to bring Peter, one of the apostles of Jesus, to his house.
At the same time, Peter also had a vision from God. In this vision, he saw a sheet with various kinds of animals, which represented Gentiles, being lowered from heaven. A voice commanded Peter to kill and eat the animals, but Peter hesitated because some of the animals were considered unclean according to Jewish dietary laws.
Through the vision, God taught Peter that he should not consider any person unclean or impure. Soon after, Cornelius' messengers arrived and Peter went with them to Cornelius' house.
When Peter arrived, he shared the good news of Jesus Christ with Cornelius and his household. While Peter was still speaking, the Holy Spirit fell upon all who heard the message. The Jewish believers who had accompanied Peter were amazed because they saw that the Gentiles also received the Holy Spirit, just as they had on the day of Pentecost.
In light of this miraculous outpouring of the Holy Spirit, Peter declared, "Can anyone withhold the water for baptizing these people who have received the Holy Spirit just as we have?" (Acts 10:47). He then commanded that Cornelius and his household be baptized in the name of Jesus Christ.
The baptism of Cornelius symbolized that the Gentiles were now equally welcomed and accepted as part of the new covenant community, alongside Jewish believers. It marked a significant turning point in the early church's understanding of God's plan for salvation, emphasizing the inclusive nature of the gospel message for all nations and people groups.