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)
Then Jesus said unto them, Take heed and beware of the leaven of the Pharisees and of the Sadducees.
And they send unto him certain of the Pharisees and of the Herodians, to catch him in his words.
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.
Cease, my son, to hear the instruction that causeth to err from the words of knowledge.
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;
At that time Herod the tetrarch heard of the fame of Jesus,
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.
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.
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.
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.