Do you know any inspirational bible verses?

Every now and again, even Christians can become sad. All we can do is pray and turn to God. But I was wondering if anyone has any bible verses that are inspirational? One that I really like is Isaiah 40:31 "Yet those who wait for the Lord will gain new strength; They will mount up with wings like eagles, They will run and not get tired, They will walk and not become weary." Thank you so much, in advance. :)