まちが間違machigaえるeru
1.

To execute an action incorrectly, leading to an unintended result or error, such as answering a question wrong or miscalculating numbers.

2.

To confuse one thing with another, resulting in a mix-up, such as mistaking a person for someone else or swapping items by accident.

Example:

あなたがたは間違えることを怖がる必要はありません。