What does Judges 9:31 mean?

And he sent messengers unto Abimelech craftily, saying, Behold, Gaal the son of Ebed and his brethren are come to Shechem; and, behold, they constrain the city to take part against thee.

And he sent messengers unto Abimelech privily, saying, Behold, Gaal the son of Ebed and his brethren be come to Shechem; and, behold, they fortify the city against thee.

And he sent messengers unto Abimelech craftily, saying, Behold, Gaal the son of Ebed and his brethren are come to Shechem; and, behold, they constrain the city to take part against thee.

And he sent to Abimelech at Arumah, saying, See, Gaal, the son of Ebed, and his brothers have come to Shechem, and they are working up the town against you.

and he sendeth messengers unto Abimelech deceitfully, saying, `Lo, Gaal son of Ebed and his brethren are coming into Shechem, and lo, they are fortifying the city against thee;

And sent messengers privately to Abimelech, saying: Behold, Gaal, the son of Obed, is come into Sichem with his brethren, and endeavoureth to set the city against thee.

and he sent messengers to Abimelech craftily, saying, Behold, Gaal the son of Ebed and his brethren are come to Shechem, and behold, they shut up the city against thee;