Time.

There is a time to every purpose and a time for everything.
So says the book of Ecclesiastes, in words of the "preacher's" writing.
God made everything and everything's beautiful in its own time.
Whatsoever He doeth, it shall be forever, a thought so sublime.
There is a time that is right to laugh and there is a time for us to weep.
There is a time for tongues to speak and a time for tongues their silence to keep.
There is a time appointed to die and there's also a time to be born.
There is a time that is proper to dance. There is a time fitting to mourn.
There is a time when we must go to war and a time for us to make peace.
There is a time it is right to hate and a time for love, when hate will cease.
There is a time to for us to get and there will come a time for us to lose.
There is a time to cast things away and there is a time to keep and choose.
There is a time when things are broken down and a time to build up and mend.
There is a time for people to sew and there is a time when they should rend.
There is a time to bund wounds and heal and there is a time proper to slay.
There is time to gather stones together and a time to cast them away.

Ecclesiastes has said it all. I just made it rhyme.