Galatians 6:7-9 "A man reaps what he sows. The one who sows to please his sinful nature, from that nature will reap destruction; the one who sows to please the Spirit, from the Spirit will reap eternal life. Let us not become weary in doing good, for at the proper time we will reap a harvest if we do not give up."
Everyday we see or hear about people who out of the goodness of their heart try to help someone but instead get conned or tricked into doing something evil or have their possessions stolen. This may be a deterrent to some of us from trying to help someone. We should always view it as our intention to help. If it comes to it that the other person has bad intentions then it would be something that that person will reap later on for themselves. It should not deter us from doing what we feel is right and what we should be doing.