The lamp of the body is the eye. If therefore your eye is good your whole body will be full of light. But if your eye is bad, your whole body will be full of darkness. If therefore the light that is in you is darkness how great is that darkness!
– Matthew 22 – 23
In my view this is to say, that in which you entertain is what you will become, and as the eyes are the windows of the soul, what we take in is what we will become. If we pay attention to things of the dark our aura/soul will be of the dark. If we were to focus our attention to faith in the lord, wisdom, enlightenment and joy then our aura/soul will be of light.
No one can serve two masters; for either he will hate the one and love the other, or else he will be loyal to the one and despise the other .
– Matthew 24
In my view this ties in with the lamp/eye bit above. As no one can serve two masters, you cannot serve the world of the dark and the world of the light at the same time. I say ‘world’ as a collective term of joy, wisdom, enlightenment, love, etc. as things of the world of light and the dark world being greed, pride, hate, sorrow, envy, pain and etc.