'Faint hearted' in the Bible

And the officers shall speak further unto the people, and shall say, What man is there that is timid and faint-hearted? let him go and return unto his house, lest his brethren's heart melt as well as his heart.

And vain men, sons of Belial, gathered to him and strengthened themselves against Rehoboam the son of Solomon, and Rehoboam was young and faint-hearted, and did not shew himself strong against them.

But we exhort you, brethren, admonish the disorderly, comfort the faint-hearted, sustain the weak, be patient towards all.