1 Kings 6:20

This inner room was thirty feet long, thirty feet wide, and thirty feet high, all covered with pure gold. The altar was covered with cedar panels.

Exodus 30:1-3

Build an altar out of acacia wood for burning incense.

1 Kings 6:2-3

The Temple Solomon built was ninety feet long, thirty feet wide, and forty-five feet high inside.

1 Kings 6:22

The whole interior of the Temple was covered with gold, as well as the altar in the Most Holy Place.

1 Kings 7:48

Solomon made all the furnishings for Jehovah's Temple: the gold altar, the gold table on which the bread of the presence was placed,

Treasury of Scripture Knowledge

Summary

And the oracle in the forepart was twenty cubits in length, and twenty cubits in breadth, and twenty cubits in the height thereof: and he overlaid it with pure gold; and so covered the altar which was of cedar.

General references

Bible References

The altar

1 Kings 6:22
The whole interior of the Temple was covered with gold, as well as the altar in the Most Holy Place.
1 Kings 7:48
Solomon made all the furnishings for Jehovah's Temple: the gold altar, the gold table on which the bread of the presence was placed,
Exodus 30:1
Build an altar out of acacia wood for burning incense.

General references

Exodus 25:11
Cover it with pure gold inside and out and put a gold border all around it.