One of the key tenets of Marxism is that the end justifies the means. In other words, if the goal is desirable then you can use whatever means are necessary to achieve it, even if they are unethical. After all, it’s for the “greater good,” right?
A Christian worldview rejects this notion wholeheartedly. Good ends should be achieved by good means. God has given us standards of right and wrong that He expects us to obey regardless of whatever noble goals we are pursuing. For example, as Christians we support worthwhile charities and missions. However, no Christian in his right mind would reason that it is acceptable in God’s eyes to rob a bank in order to give lots of money to a charity or a missionary.