Mark 8:15

"And he charged them, saying, Take heed, beware of the leaven of the Pharisees, and of the leaven of Herod."

Cross References (ranked by relevance)

Matthew 16:6

Then Jesus said unto them, Take heed and beware of the leaven of the Pharisees and of the Sadducees.

Mark 12:13

And they send unto him certain of the Pharisees and of the Herodians, to catch him in his words.

Leviticus 2:11

No meat offering, which ye shall bring unto the LORD, shall be made with leaven: for ye shall burn no leaven, nor any honey, in any offering of the LORD made by fire.

Proverbs 19:27

Cease, my son, to hear the instruction that causeth to err from the words of knowledge.

1 Timothy 6:13

I give thee charge in the sight of God, who quickeneth all things, and before Christ Jesus, who before Pontius Pilate witnessed a good confession;

Matthew 14:1

At that time Herod the tetrarch heard of the fame of Jesus,

1 Timothy 5:21

I charge thee before God, and the Lord Jesus Christ, and the elect angels, that thou observe these things without preferring one before another, doing nothing by partiality.

Luke 12:15

And he said unto them, Take heed, and beware of covetousness: for a man’s life consisteth not in the abundance of the things which he possesseth.

2 Timothy 2:14

Of these things put them in remembrance, charging them before the Lord that they strive not about words to no profit, but to the subverting of the hearers.

1 Chronicles 28:20

And David said to Solomon his son, Be strong and of good courage, and do it: fear not, nor be dismayed: for the LORD God, even my God, will be with thee; he will not fail thee, nor forsake thee, until thou hast finished all the work for the service of the house of the LORD.