Before He comes we weigh the Time — Time Installment

Before He comes we weigh the Time! 1
'Tis Heavy and 'tis Light.
When He depart, an Emptiness
Is the prevailing Freight.
(F.949/J.834)
[1] He:: an installment product by a salesman. Time:: the time, period to pay the installment.
[2] Heavy:: hard in total amount. Light:: easy in divided payment.
[3] depart:: a) to leave; b) to forsake (the installment). Emptiness:: a) the man left; b) the product gone for failing to pay.
[4] Freight:: load, burden.

The value of a sewing machine . . . It appears that the machine was, on March 14th, 1856, delivered by the defendants to one Isaac Strauss, under an executory contract of sale, the condition of which was that he was to pay for it $150. Fifty dollars was paid at the time of delivery, and the residue was to be paid in monthly instalments of $15 each. ─ Reports of Cases Argued and Determined in the Court of Common Pleas (1860)