According to Dictionary.com, this is the definations for "pure"
free from anything of a different, inferior, or contaminating kind; free from extraneous matter: pure gold; pure water.
unmodified by an admixture; simple or homogeneous.
of unmixed descent or ancestry
free from foreign or inappropriate elements
clear; free from blemishes
abstract or theoretical: pure science.
without any discordant quality; clear and true: pure tones in music.
absolute; utter; sheer: to sing for pure joy.
being that and nothing else; mere
clean, spotless, or unsullied
untainted with evil; innocent: pure in heart.
physically chaste; virgin.
ceremonially or ritually clean.
free of or without guilt; guiltless.
for more songs for the soul follow the link in my right hand column.