'Faint hearted' in the Bible

He is to say to them: ‘Listen, Israel: Today you are about to engage in battle with your enemies. Do not be cowardly. Do not be afraid, alarmed, or terrified because of them.

The officers will continue to address the army and say, ‘Is there any man who is afraid or cowardly? Let him leave and return home, so that his brothers’ hearts won’t melt like his own.’