The bronze altar described in (Exodus 27:1-21) gets a practical upgrade in the Targum Jonathan. Where the Hebrew text simply says to build a grate of bronze netting, the Targum explains exactly why it was needed.
The grate was placed beneath the altar's rim, extending to its midpoint, so that "if any fragment or fiery coal fall from the altar, it may fall upon the grate, and not touch the ground." The priests could then retrieve the fallen coal from the grate and place it back on the altar. No sacred fire was to be wasted. No holy ember was to touch common earth.
This is a detail the Hebrew Bible never provides. The Torah gives dimensions and materials. The Targum gives the reason. It transforms the altar from a static object into a working system designed with care for every burning fragment.
The Targum also specifies that the altar itself was "hollow, with boards filled with dust." When they arrived at a new camp, the hollow altar frame would be packed with earth from that location. The altar literally absorbed the ground of every place Israel traveled.
For the eternal lamp, the Targum clarifies that Aaron and his sons were responsible for setting it in order "from evening until morning before the Lord," and that this was "an everlasting statute to your generations of the house of Israel." The Targum consistently makes universal commands more specific, directing them to the priests and to the nation by name.
What the Hebrew Bible builds with measurements, the Targum Jonathan rebuilds with purpose. Every detail gets a reason. Every object gets a story.