The eye is the lamp of the body. So if your eye is sound, your entire body will be full of light. But if your eye is unsound, your whole body will be full of darkness. If then the very light in you [your conscience] is darkened, how dense is that darkness!
No one can serve two masters; for either he will hate the one and love the other, or he will stand by and be devoted to the one and despise and be against the other. You cannot serve God and mammon deceitful riches, money, possessions, or whatever is trusted in).
Matthew 6:22-24 (Amplified Bible)
To Timothy, [my] beloved child: Grace (favor and spiritual blessing), mercy, and [heart] peace from God the Father and Christ Jesus our Lord! I thank God Whom I worship with a pure conscience, in the spirit of my fathers, when without ceasing I remember you night and day in my prayers, And when, as I recall your tears, I yearn to see you so that I may be filled with joy.
2 Timothy 1:2-4 (Amplified Bible)
A good father is a light that guides us to righteousness, yet a poor (bad) father will have us wander blindly towards evil. Perhaps the word father here is actually refering to Our conscience?
The Intuitive Life Coach 