CCC 2149

Oaths which misuse God's name, though without the intention of blasphemy, show lack of respect for the Lord. the second commandment also forbids magical use of the divine name.

[God's] name is great when spoken with respect for the greatness of his majesty. God's name is holy when said with veneration and fear of offending him.⁸⁰ St. Augustine, De serm. Dom. in monte 2, 5, 19: PL 34, 1278PL — Patrologia Latina (Migne).