Exodus 30:5

2 The altar is to be square, a cubit long and a cubit wide, and two cubits high, and its horns are to be made of the same.

3 It is to be plated with the best gold, the top of it and the sides and the horns, with an edging of gold all round it.

4 Under the edge on the two opposite sides, you are to make two gold rings, to take the rods for lifting it.

5 And make these rods of the same wood, plating them with gold.

6 And let it be placed in front of the veil before the ark of the law, before the cover which is over the law, where I will come face to face with you.

7 And on this altar sweet spices are to be burned by Aaron every morning when he sees to the lights.

8 And every evening, when he puts the lights up in their places, the spices are to be burned, a sweet-smelling smoke going up before the Lord from generation to generation for ever.