Contradiction with Matthew 10:20
This verse states that it is not you speaking, but the Spirit of your Father, contradicting Ephesians 6:20 where Paul emphasizes his own role as an ambassador in bonds.
Matthew 10:20: For it is not ye that speak, but the Spirit of your Father which speaketh in you.
Contradiction with 2 Corinthians 3:5
This verse highlights that our sufficiency is from God, while Ephesians 6:20 focuses on Paul's individual advocacy and speaking boldly.
2 Corinthians 3:5: Not that we are sufficient of ourselves to think any thing as of ourselves; but our sufficiency [is] of God;
Contradiction with Jeremiah 1:6-7
Jeremiah expresses inadequacy and is reassured by God, whereas Ephesians 6:20 implies Paul's readiness to speak boldly despite his bonds.
Jeremiah 1:6-7: Then said I, Ah, Lord GOD! behold, I cannot speak: for I [am] a child.
Contradiction with Exodus 4:10-12
Moses hesitates and is reassured by God to speak, in contrast to Ephesians 6:20 where Paul confidently claims his ambassadorship.
Exodus 4:10-12: And Moses said unto the LORD, O my Lord, I [am] not eloquent, neither heretofore, nor since thou hast spoken unto thy servant: but I [am] slow of speech, and of a slow tongue. [eloquent: Heb. a man of words] [heretofore: Heb. since yesterday, nor since the third day]
Contradiction with 1 Kings 3:7-9
Solomon admits to lack of experience and understanding and asks for wisdom, while Paul in Ephesians 6:20 claims a position of bold declaration.
1 Kings 3:7-9: And now, O LORD my God, thou hast made thy servant king instead of David my father: and I [am but] a little child: I know not [how] to go out or come in.