God
Capitalize in reference to the Supreme Being or Deity; otherwise lowercase:
the God of Moses
a god
sun god
rain god
jester god
monkey god
Modern usage tends not to capitalize he, his, him, and himself or who, whom, and whose in reference to God or Christ:
God in his wisdom
Jesus went his way
Capitalize he if ambiguous:
When Christ saw Peter, He went up into the mountains.
See also deity.