ISB ~ Hebrews 9 v1 - 14
The layout of the Mosaic Tabernacle. The sanctuary proper was composed of two chambers:the outer tent or Holy Place, where the priests of Israel performed regular duties, and the inner tent or Holy of Holies, where the high priest alone could enter once a year. For the author, the first and second chambers of the Tabernacle symbolize the first (Mosaic) and second (New) covenants (8:7), as well as earth and heaven. Thus, the Aaronic high priest, who passed from the first tent to the second once a year, is a type of Christ, who passed from the Old Covenant into the New once for all time when he ascended into the presence of God in heaven (4:14; 9:24).
• The distinction between the first and second tents can be explained in two ways. In one sense, the first tent represents the Old Covenant, and the second tent the New. In another, the first signifies the Church, and the second the glory of heaven (St. Thomas Aquinas, Commentary on Hebrews 9, 1).