The Seventh-day Adventist doctrine of pre-advent investigative judgment has faced skepticism since the late 19th century, largely due to perceived conflicts with the Epistle to the Hebrews. This study endeavors to establish the doctrine's biblical foundation, predominantly found in the book of Daniel, while scrutinizing its compatibility with the New Testament. By analyzing texts in Daniel 7, 8, 9, and the explicit sequence in Revelation 14, this research provides compelling evidence for the concept of pre-advent judgment in the Bible. However, questions arise concerning the location of Jesus' post-ascension ministry in heaven, particularly in the context of "seated at the right hand of God". Despite potential conflicts suggested by this phrase, aspects such as intercessory ministry and High priest Christology appear to harmonize with the doctrine. While this article offers substantial support, a more detailed examination of their compatibility awaits part two of this study.