The picture shows a model of the Ark, where the lid has been removed so you can see the contents that fit inside the Ark:
1. The two stone tablets of the Law.
2. Aaron’s rod that budded.
3. The golden pot of ‘hidden’ manna. Together these three items form the Testimony,
Exodus 25:21 ‘Place the cover on top of the ark and put in the ark the tablets of the covenant law that I will give you.’ hence the Ark is called the Ark of the Testimony.
"Therefore, I urge you, brothers, in view of God’s mercy, to offer your bodies as living sacrifices, holy and pleasing to God—this is your spiritual act of worship."