'Encourage' in the Bible

David told the messenger, “Say this to Joab: ‘Don’t let this matter upset you because the sword devours all alike. Intensify your fight against the city and demolish it.’ Encourage him.”

“Now get up! Go out and encourage your soldiers, for I swear by the Lord that if you don’t go out, not a man will remain with you tonight. This will be worse for you than all the trouble that has come to you from your youth until now!”