2 Corinthians 3:5

5 Not that we are competent in ourselves to claim anything for ourselves, but our competence comes from God.

Read 2 Corinthians 3:5 Using Other Translations

Not that we are sufficient of ourselves to think any thing as of ourselves; but our sufficiency is of God;
Not that we are sufficient in ourselves to claim anything as coming from us, but our sufficiency is from God,
It is not that we think we are qualified to do anything on our own. Our qualification comes from God.