2 Chronicles 30:9
For if you come back to the Lord, those who took away your brothers and your children will have pity on them, and let them come back to this land: for the Lord your God is full of grace and mercy, and his face will not be turned away from you if you come back to him.
And he took bread and, having given praise, he gave it to them when it had been broken, saying, This is my body, which is given for you: do this in memory of me.
And in the same way, after the meal, he took the cup, saying, This cup is the new testament, made with my blood which is given for you.
And when they were taking food, Jesus took bread and, after blessing it, he gave the broken bread to the disciples and said, Take it; this is my body.
Take of it, all of you, for this is my blood of the testament, which is given for men for the forgiveness of sins.
Take away, then, the old leaven, so that you may be a new mass, even as you are without leaven. For Christ has been put to death as our Passover. Let us then keep the feast, not with old leaven, and not with the leaven of evil thoughts and acts, but with the unleavened bread of true thoughts and right feelings.
1 Corinthians 5:7-8