For morning and evening review:

(99) Salvation is my only function here.

My function here is to forgive the world for all the errors 
I have made. For thus am I released from them 
with all the world.

(100) My part is essential to God's plan for salvation.

I am essential to the plan of God for the salvation of the world. 
For He gave me His plan that I might save the world.

On the hour:

Salvation is my only function here.

On the half hour:

My part is essential to God's plan for salvation.