World Wide Study Bible
a Bible passage
a time to kill, and a time to heal;
a time to break down, and a time to build up;
3. time to kill—namely, judicially, criminals; or, in wars of self-defense; not in malice. Out of this time and order, killing is murder.
to heal—God has His times for "healing" (literally, Isa 38:5, 21; figuratively, De 32:39; Ho 6:1; spiritually, Ps 147:3; Isa 57:19). To heal spiritually, before the sinner feels his wound, would be "out of time," and so injurious.
time to break down—cities, as Jerusalem, by Nebuchadnezzar.