"What goes around comes around."

A proverb meaning, "the consequences of one's actions will have to be dealt with eventually".

Meaning, what goes around will determine destiny or karma.

"Now as a man is like this or like that,

according as he acts and according as he behaves, so will he be;

a man of good acts will become good, a man of bad acts, bad;

he becomes pure by pure deeds, bad by bad deeds;

And here they say that a person consists of desires,

and as is his desire, so is his will;

and as is his will, so is his deed;

and whatever deed he does, that he will reap."

— Brihadaranyaka Upanishad, 7th century BCE

In Christianity karma is described as “what you sow is what you reap”.

If what you sow is harm, abuse and negative karma then what you reap are sins and damnation.  

Karma states that what you may not be held into account in this life, you will be held into account in the next life.  

Judgement Day states that what you may not be held into a count in this life the Lord will hold you to account in the afterlife for what and how you sow, not just for what and how you reap.