Pentecost is one of the important celebrations in the Christian tradition that has strong roots in the texts of the Old Testament and New Testament. In the Old Testament, Pentecost, known as the Feast of Harvest or Shavuot, was celebrated as an expression of gratitude for the harvest and as a reminder of the giving of the Torah to the Israelites on Mount Sinai. Meanwhile, in the New Testament, Pentecost became a monumental moment when the Holy Spirit was poured out on the apostles, marking the birth of the Christian church. A deep understanding of the meaning of Pentecost in these two covenants is essential for examining the continuity and theological development between the two. This research aims to explore and interpret the meaning of Pentecost by considering the historical, theological, and spiritual contexts behind it. The purpose of this study is to provide a comprehensive understanding of the meaning of Pentecost in the context of the Old Testament and New Testament. This research seeks to identify the central themes that emerge from both texts as well as how these themes contribute to Christians' understanding of Pentecost today. Thus, this research is expected to provide new insights for the study of theology and religious practice. The approach used in this study is a theological approach with qualitative research methods and text analysis. Through an in-depth analysis of biblical texts, this study will explore the relationship between symbolism and meaning contained in the celebration of Pentecost in both covenants. The conclusion of this study shows that the difference in the meaning of Pentecost in the Old and New Testaments is a transition from agrarian ritual to a profound spiritual experience, in which the Holy Spirit plays an active role in the lives of believers. Overall, Pentecost reflects the development of the Christian faith from a traditional agrarian context to a more complex spiritual understanding of God's presence through the Holy Spirit. Thus, Pentecost is not only a celebration of history but a theological statement of God's presence in the lives of His people. This research is expected to be a reference for further studies on the relationship between the liturgical tradition and Christian theology and its relevance in the contemporary context. For the next research, it is hoped that this research can be made better because the author knows that this research is not perfect.