I am composed of 7 letters:
My 1,2,7 means through.
My 3,4,5,7 gives a favorable expression in the face.
My 5,2,3,1,4 is in heaven.
My 4,5,6,7 is the earth.
My 4,1,2,7 means to give assistance
What am I?
[if you can figure it out, you may enter your answer below in the comment section. Submissions to be unmasked Monday]