2 Cor 11

1I wish you would bear with me in a little foolishness. Do bear with me! 2For I feel a divine jealousy for you, since I betrothed you to one husband, to present you as a pure virgin to Christ. 3But I am afraid that as the serpent deceived Eve by his cunning, your thoughts will be led astray from a sincere and pure devotion to Christ. 4For if someone comes and proclaims another Jesus than the one we proclaimed, or if you receive a different spirit from the one you received, or if you accept a different gospel from the one you accepted, you put up with it readily enough. 5Indeed, I consider that I am not in the least inferior to these super-apostles. 6Even if I am unskilled in speaking, I am not so in knowledge; indeed, in every way we have made this plain to you in all things.

2 Corinthians 3:4

Such is the confidence that we have through Christ toward God.

confidence Trust or reliance: properly, persuasion; used of human confidence (deluded self-persuasion in Phil 3:4), but more commonly of Spirit-produced persuasion

Eph 3

11This was according to the eternal purpose that he has realized in Christ Jesus our Lord, 12in whom we have boldness and access with confidence through our faith in him. 

boldness freedom, openness, especially in speech