The Bible frequently uses the hyssop plant as a symbol of cleansing and purification. In relation to Christ's sacrifice, this herb has a connection to the Passover.
There are parallels in the purification ritual in Leviticus and our cleansing from sin, which we could compare to spiritual leprosy.
The leper's healing teaches that, while Jesus freely healed the man, his cleansing was not really free. The gift he was told to present contains vital instruction.
The husband is commanded to love his wife as his own body, regarding her as precious and delicate, continually nourishing and protecting her.
Ephesians 2 says Christians were spiritually dead. Thankfully, God resurrected us from the grave through the substitutionary sacrifice of Christ.
The contrite or brokenhearted person finds special favor with God, and a humble or contrite spirit is indeed a precursor to forgiveness and spiritual healing.
After we accept Christ's sacrifice, we desperately need to come out of sin, walking in light rather than darkness, having continuous fellowship with God.