Log

Log was the smallest unit of liquid measure in the Mosaic system, equal to approximately one pint or 0.3 liters (though ancient metrology is uncertain). It is mentioned only in connection with the purification ritual for a healed leper: a log of oil is repeatedly specified in Leviticus 14 as the amount the priest was to use in the elaborate cleansing ceremony—one log of oil brought with two male lambs and one ewe lamb, used for wave offerings, anointing, and sprinkling (Lev. 14:10, 12, 15, 21, 24).

The log stood in relation to larger liquid measures as follows: 12 logs = 1 hin; 72 logs = 1 bath; 720 logs = 1 kor. The term reflects a system of measurement based on physical containers in common use, likely a clay vessel of a standardized size. The specificity of the log requirement in the leper's purification ritual illustrates the detailed nature of Mosaic purity law, where even the quantity of ceremonial oil was divinely prescribed.