Page 200
EXERCITAT. II. When the Sabbath day beginneth. Commandement IV.
Gen. 1.8. And the evening and the morning were the first day.
FOr the understanding of this, when the Sabbath be∣ginneth, we must know first, what is a naturall day, and what is an artificiall day: A naturall day is the space of twenty foure houres, measured by the presence and absence of the sunne; the presence of the sunne is called the day, and the absence of it is called the night.
An artificiall day is from the sunne rising to the sunne setting, as Exod. 18.14. Why sittest thou thy selfe alone, and all the people stand by thee from morning unto even, and so Ioh. 11.9. Are there not twelve houres in the day.
The naturall day began in the morning, because the light was the first thing that was created; this light mea∣sured the three first dayes when it shined; and it made the night when it withdrew it selfe: but from the fourth day after the creation, the sunne measured the day, and the moone the night.
That darkenesse which was upon the face of the earth made not the first night, it was no part of time, but punctum temporis; for time is the measure of motion, and it began with the light, and shall end with it. Rev. 10.6. Then there shall be no more time.
Secondly, the night is the privation of light, and the habit goeth alwayes before the privation; therefore