XVIII. (95) But also it is expressly ordered, that men should offer as first fruits the tenths, not only of animals, but also of all the things which grow up out of the earth; "For," says the scripture, "every tenth of the earth from the seed and from the fruit of every tree, is holy to the Lord: and every tenth of oxen and sheep, and everything of any cattle which passes under the rod, of all these the tenth shall be holy to the Lord." (96) You see that he thinks that it is proper to make an offering, by way of first fruits from the corporeal mass that is around us, which is really earthly and wooden; for life, and durability, and increase, and good health, fall to his share through the divine grace. You see also, that again an express command is given to offer first-fruits from all the irrational animals that are around ourselves; and by these are meant the outward senses. For to see, and to hear, and to smell, and to taste, and also to touch are divine gifts, for which it is our duty to give thanks. (97) But not only are we taught to thank the giver of all goodness for these earthly, and wooden, and corporeal things, and for the irrational animals, the outward senses, but also for the mind, which, to speak with strict propriety, is man in man, the better in the worse, the immortal in the mortal. (98) On this account I think it is, that God ordered to be consecrated the whole of the firstborn, the tenth, I mean the tribe of Levi, taking them in exchange for the first-born, for the preservation and protection of holiness, and piety, and sacred ministrations, which all have reference to the honour of God. For the first and best thing in ourselves is our reason, and it is very proper to offer up the first-fruits of our cleverness, and acuteness, and comprehension, and prudence, and of all our other faculties which we have in connection with our reason as first-fruits to God, who has bestowed upon us this great abundance of power of exerting our intelligence. (99) From this consideration it was, that Jacob, the practiser of virtue, at the beginning of his prayers, says: "Of all that thou givest me, I will set apart and consecrate a tenth to Thee."[Ge 28:22.] And the sacred scripture, which was written after the prayers on occasion of victory, which Melchisedek, who had received a self-instructed and self-taught priesthood, makes, says: "For he gave him a tenth of all Things,"[Ge 14:20.] assigning to him the outward senses the faculty of feeling properly, and by the same sense of speech the faculty of speaking well, and by the senses connected with the mind the faculty of thinking well. (100) Very beautifully, therefore, and at the same time most unavoidably, does the sacred historian tell us in the fashion of an incidental narrative, when the memorial of that heavenly and divine food was consecrated in the golden urn, that "gomer was the tenth part of three Measures."[Ex 16:36.] For in us men there appear to be three measures, the outward senses, and speech, and mind. The outward sense being the measure of the objects of outward sense, speech being the measure of nouns and verbs, and of whatever is said; and the mind being the measure of those things which can only be perceived by the intellect. (101) We must therefore offer first-fruits of each of these three measures as a sacred tenth, in order that our powers of speaking, and of feeling, and of comprehending, may be seen to be irreproachable and sound, in reference to and in connection with God. For this is the true and just measure, and the things that relate to ourselves are false and unjust measures.