There is an interesting story in the Bible. The story of Samson and Delilah...While Samson lied to Delilah about the nature of his incredible strength, God was with him. Samson had been separated for God, as he was a Nazirite. His hair hadn't been cut, because it was what made him powerful. Once he told Delilah the truth about the source of his strength...the Lord left him.
There is another example in the Bible. The story of Rahab and the spies. In Jericho, a prostitute named Rahab assisted Israelite spies by hiding them from the local authorities. The spies, in return for her protection, promised to save her and her family during the planned military invasion as long as she fulfilled her part of the deal by keeping the details of the contact with them secret and leaving a sign on her residence that would be a marker for the advancing soldiers to avoid. She kept her word by hiding the spies when the city guard came to her house looking for them; the Israelites kept their word by sparing her family from the general massacre after taking the city: they recognized Rahab's house by a red cord hanging from her window. After the people of Israel conquered Canaan, she left prostitution, joined the Jewish people, and became a respectable married woman. Though it doesnt say that she exactly lied, she kept the secret...Probably the guard asked her, and she misled the guard. I don't think it is good to lie, but well no one is perfect. As good as MJ's family may want to be, they cant be perfect either.
http://www.keyway.ca/htm2002/samdel.htm
http://en.wikipedia.org/wiki/Rahab