Matthew 19:4-6 (American Standard Version)

And he answered and said, Have ye not read, that he who made them from the beginning made them male and female, and said, For this cause shall a man leave his father and mother, and shall cleave to his wife; and the two shall become one flesh? So that they are no more two, but one flesh. What therefore God hath joined together, let not man put asunder.

Asunder is a powerful word, and is more modernly replaced with separate, which is what the original Greek [χωριζω, χωριζετω] (chorizo, chorizeto {kho-rid’-zo, kho-rid-zet’-o}] translates into: to separate, divide, part, put asunder, to separate one’s self from, to depart 1a) to leave a husband or wife 1a) of divorce 1b) to depart, go away.

Tense – Present
Voice – Active
Mood – Imperative