Genesis 12:12 Therefore it will happen, when the Egyptians see you, that they will say, ‘This is his wife’; and they will kill me, but they will let you live.
When Abraham took his wife Sarah to try and get away from the famine in his own land, he thought he was doing the right thing.
When he got there he did not want the local people to take his wife because she was so beautiful; so he told a bit of a lie!
God does not want us to have to tell lies to get out of trouble but rather to trust in Him and depend on Him so the trouble will be dealt with by Him instead.
Trust is a very big word when you are worried by the people around you!