The gold incense altar likely stood just outside the inner curtain (Exodus 30:1–10). Its exact location is unclear in the Old Testament, but it was closely linked to the Most Holy Place (Exodus 30:6; Leviticus 16:13; 1 Kings 6:22).
The ark of the covenant, representing God's presence, was the most important item in the tabernacle (see Exodus 25:10–22).
The gold jar with manna reminded people of God's provision in the wilderness (Exodus 16:32–34).
Aaron’s staff, which sprouted leaves (see Numbers 17:1–11), reminded people not to rebel against God's chosen leaders (Numbers 17:10; compare Hebrews 13:17).
The stone tablets of the covenant held the Ten Commandments and reminded the people of the rules they were to live by (Exodus 25:16; 31:18; Deuteronomy 9:9–10:5).