There comes an hour when begging stops — Judgment Day

There comes an hour when begging stops, 1
When the long interceding lips
Perceive their prayer is vain.
"Thou shalt not" is a kinder sword
Than from a disappointing God
"Disciple, call again."
(F.1768/J.1751)
[1] begging stops:: people stop praying.
[2, 3] lips, vain:: prayers are in vain.
[4] "Thou shalt not":: commands in Bible appeared over two hundred times.
[6] "call again":: to visit the human again by God is a stronger sword, the day of judgment.