How are you going to reason out this phrase "The end justifies the means" when it comes to giving. For example, you really desire to help but your means of helping those in need is ZERO as in nothing. So you rob someone of his money and give it to the one you are wishing to help with. The objective is good but we all know that stealing is wrong and is a sin. So what is your opinion on this please. Will you do the same or just won't do anything?
The stated example fits to the phrase "the justifies the means" but the problem is you stated the wrong phrase, it should be "the end does not justify the means. It is actually a basis of morality and there are 3 of them. The first is "do good, avoid evil", second one is "if confronted with two evils, choose the lesser evil and the last "the end does not justify the means". Np matter how good are our intentions maybe if the means or the act is wrong then it is always wrong.