Is betraying a friend a sin?

When you betray someone, for example try to push them into a pit, or a lions den, you will be the one whoultimately suffers the Bible says. Betrayal comes from coveting what another has. In the Bible Joseph's brother betrayed, only later to be summons my him, at his total ability to devourer them. Betrayal hates blessings, and loves curses on another, it stems from being covetous, or jealous