No,you should tell your parents or the police. They can see if they can find whose money it is.You sin to God and Jesus if you take the money. think of a war, your team mate is injured, and there’s a brand new gun who would you chose? Me personally I would chose the team mate because his family would lose a member of their family. If your convincedon taking the wad of cash think who convinced you God, or satan. A decent bike may be nice but why would you sin for a bike. Thats why I said no to found money.