Christians are like snow covered dung!

(Martin Luther)

"Though your sins are like scarlet, they shall be as white as snow;
  though they are red like crimson, they shall be as white as wool!" Isaiah 1:18

Christians are like snow covered dung; it is the purity of the covering which the Father sees!

"On that day a fountain will be opened — to cleanse them from all their sins and defilement!" Zechariah 13:1

"The blood of Jesus Christ cleanses us from all sin!" 1 John 1:7

"God made Him who had no sin to be sin for us, so that in Him we might become the righteousness of God!" 2 Corinthians 5:21

"You are absolutely beautiful, My beloved! There is no spot in you!" Song of Solomon 4:7

"They are without fault before the throne of God!" Revelation 14:5

"Because the sinless Savior died
 My sinful soul is counted free.
 For God the just is satisfied
 To look on Him — and pardon me!"
Charitie L. Bancroft, 1863