In Matthew 16:1, the Pharisees and Sadducees test Jesus — the very group whose teaching Jesus warns against here.

Matthew 16:12 clarifies that 'leaven' refers to the teaching of the Pharisees and Sadducees, providing the intended interpretation.

In Matthew 3:7, John rebukes the same Pharisees and Sadducees as a 'brood of vipers' — consistent with Jesus' warning about their corrupting influence.

In Matthew 7:15, Jesus warns against false prophets in sheep's clothing — a direct parallel to beware of the deceptive teaching of the Pharisees.

In Matthew 22:23, the Sadducees' denial of resurrection is shown — the specific false teaching that constitutes their leaven.

Mark 8:15 adds 'leaven of Herod' as another source of corrupting influence, expanding the warning beyond Pharisees and Sadducees.

Luke 12:1 interprets the leaven as hypocrisy, giving a specific meaning to the metaphor Jesus uses.

1 Corinthians 5:6-8 uses leaven as a metaphor for malice and evil, applying the same imagery to church discipline.

Galatians 5:9 quotes the proverb 'a little leaven leavens the whole lump', applying it to false teaching, paralleling Jesus' warning.

In 2 Timothy 2:17, false teaching spreads like gangrene — a direct parallel to leaven spreading through dough, both corrupting influences.

Luke 20:27 shows Sadducees denying resurrection, revealing the false teaching Jesus warns against.

1 Corinthians 5:8 uses the same 'leaven' metaphor for evil, directly echoing Jesus' warning.

Exodus 12:15-19 commands removing leaven during Passover, establishing leaven as a symbol of impurity that must be purged.

In Exodus 13:7, leaven is physically removed during Passover — symbolically connecting to Jesus' warning to avoid the corrupting leaven of false teaching.

Leviticus 2:11 prohibits leaven in grain offerings, reinforcing leaven as something unclean or unfit for holy use.

Colossians 2:8 warns against deceptive philosophy — similar to Jesus' warning against false teaching.