I am the light of the world.

Forgiveness is the demonstration that you are the light of the world. Through your forgiveness does the truth about yourself return to your memory.

Illusions about yourself and the world are one. That is why all forgiveness is a gift to yourself. Your goal is to find out who you are, having denied your Identity by attacking creation and its Creator.

The purpose of the world you see is to obscure your function of forgiveness, and provide you with a justification for forgetting it.

Your function here is to be the light of the world, a function given you by God. It is only the arrogance of the ego that leads you to question this, and only the fear of the ego that induces you to regard yourself as unworthy of the task assigned to you by God Himself. The world's salvation awaits your forgiveness, because through it does the Son of God escape from all illusions, and thus from all temptation. The Son of God is you.

On a clean slate let my true function be written for me.

The full acceptance of salvation as your only function necessarily entails two phases; the recognition of salvation as your function, and the relinquishment of all the other goals you have invented for yourself.
God gives you only happiness. Therefore, the function He gave you must be happiness, even if it appears to be different.
There are only two parts of your mind. One is ruled by the ego, and is made up of illusions. The other is the home of the Holy Spirit, where truth abides. There are no other guides but these to choose between, and no other outcomes possible as a result of your choice but the fear that the ego always engenders, and the love that the Holy Spirit always offers to replace it.

zenhabits : breathe
Zen Mind in the Middle of Chaos & Stress

"A good memory of religious ideas is not the same as a good inner nature,
 but many think so." vh