Avoid the calculated giver. The one who says come eat and drink but his heart is not with you. For that morsel of meat, he will want control over your soul and your decision-making process. If you refuse to give him, he declares war on you claiming his small morsel of meat is responsible for a lot going on in your life, exaggerating the effect of his "small meal" and blaspheming the worthy name by which you are called. This will leave you with a sense of deep regret for ever opening the door and allowing him in.