'Deceitfully' in the Bible

Jacob’s sons answered Shechem and Hamor his father deceitfully, because Shechem had defiled and disgraced their sister Dinah.

Moses said, “I am going to leave you, and I will urgently petition (pray, entreat) the Lord that the swarms of insects may leave Pharaoh, his servants, and his people tomorrow; only do not let Pharaoh act deceitfully again by not letting the people go to sacrifice to the Lord.”

“My brothers have acted deceitfully like a brook,Like the torrents of brooks that vanish,

“Will you speak what is unjust for God,And speak what is deceitful for Him?

They speak deceitful and worthless words to one another;With flattering lips and a double heart they speak.

He who has clean hands and a pure heart,Who has not lifted up his soul to what is false,Nor has sworn [oaths] deceitfully.

Your tongue devises destruction,Like a sharp razor, working deceitfully.

“Their tongue is a murderous arrow;It speaks deceit;With his mouth one speaks peace to his neighbor,But in his heart he lays traps and waits in ambush for him.

You, O Lord are [uncompromisingly] righteous and consistently just when I plead my case with You;Yet let me discuss issues of justice with You:Why has the way of the wicked prospered?Why are those who deal in treachery (deceit) at ease and thriving?

that you have deceived yourselves; for you sent me to the Lord your God, saying, “Pray for us to the Lord our God; and whatever the Lord our God says, declare it to us and we will do it.”

“Cursed is the one who does the work of the Lord negligently,And cursed is the one who restrains his sword from blood [in executing the judgment of the Lord].

along with the [false] prophets of Israel who prophesy [deceitfully] to Jerusalem, and who see [false] visions of peace for her when there is no peace,’ says the Lord God.

After an alliance is made with him he will work deceitfully, and he will go up and gain power with a small force of people.