People forget when you put in a spiritual belief, you should purge out what is in there. You cant successfully mix them together.
1 Cor 5:7-8
7 Therefore purge out the old leaven, that you may be a new lump, since you truly are unleavened. For indeed Christ, our Passover, was sacrificed for us.
8 Therefore let us keep the feast, not with old leaven, nor with the leaven of malice and wickedness, but with the unleavened bread of sincerity and truth.
(NKJ)
Matt 16:11-12
11 "How is it you do not understand that I did not speak to you concerning bread?-- but to beware of the leaven of the Pharisees and Sadducees."
12 Then they understood that He did not tell them to beware of the leaven of bread, but of the doctrine of the Pharisees and Sadducees.
(NKJ)