But Jesus said, 
Suffer little children, and forbid them not,
to come unto me: 
for of such is the kingdom of heaven.
Matthew 19:14

If I wash myself with snow water, 
and make my hands never so clean.
Job 9:30

Purge me with hyssop, 
and I shall be clean: wash me,
and I shall be whiter than snow. 
Psalm 51:7

 Come now, and let us reason together,
saith the LORD: 
though your sins be as scarlet,
they shall be as white as snow;
though they be red like crimson, 
they shall be as wool. 
Isaiah 1:18