'Act' in the Bible

"This is what the entire community of the LORD has to say: "What is this treacherous act by which you have acted deceitfully against the God of Israel by turning away from following the LORD today, and by building yourselves an altar today, so you can rebel against the LORD?

Didn't Zerah's son Achan act treacherously with respect to the things banned by God, and as a result God became angry at the entire community of Israel? And that man was not the only one to die because of his iniquity.'"

"The God of gods, the LORD, the God of gods, the LORD is the one who knows! And may Israel itself be aware that if this was an act of rebellion or an act of treachery against the LORD, may he not deliver us today!