Ye shall offer no strange incense thereon, nor burnt sacrifice, nor meat offering; neither shall ye pour drink offering thereon.
Ye shall offer no strange incense - i:e., of a different composition from that of which the ingredients are described so minutely. The perpetual incense which the priests were to offer was a condiment of which pure frankincense was a necessary ingredient. It has been ascertained by the researches of modern botanists that the frankincense tree, Boswellia serrata, in Sanskrit, Kunduru, was a native of India, whence it is now generally believed that the frankincense burnt in the Jewish tabernacle was obtained (Dr. Kay). But there was a thuriferous district, Oman, in Arabia, under the mountains of the Asabi, near the Cattabani (Ptolemy, 'Geography,' p. 154). (See a description of this district, and of the frankincense tree of Arabia, in No. 11 of the 'Bombay Branch of the Royal Asiatic Society,' by Dr. H.J. Carter, Bombay Establishment.)