'Lose Heart' in the Bible

And he shall say to them, 'Hear, Israel, you are near {today} to the battle against your enemies; {do not lose heart}; you shall not be afraid, and you shall not panic, and you shall not be terrified {because of them},

And [the] ships of Kittim will come against him, and he will lose heart, and he will turn back, and he will be enraged {against the holy covenant}, and he will take action, and he will turn back, and he will pay attention to [those who] forsake {the holy covenant}.

Because of this, [since we] have this ministry, just as we have been shown mercy, we do not lose heart,

Therefore we do not lose heart, but even if our outer person is being destroyed, yet our inner [person] is being renewed day after day.