Have you not known? Have you not heard? The Lord is the everlasting God, the Creator of the ends of the earth. He does not faint or grow weary; his understanding is unsearchable. He gives power to the faint, and strengthens the powerless. Even youths will faint and be weary, and the young will fall exhausted; but those who wait for the Lord shall renew their strength, they shall mount up with wings like eagles, they shall run and not be weary, they shall walk and not faint.
Isaiah 40:28-31 (NRSV)
Now a certain man was ill, Lazarus of Bethany, the village of Mary and her sister Martha. Mary was the one who anointed the Lord with perfume and wiped his feet with her hair; her brother Lazarus was ill. So the sisters sent a message to Jesus, “Lord, he whom you love is ill.” But when Jesus heard it, he said, "This illness does not lead to death; rather it is for God’s glory, so that the Son of God may be glorified through it." Accordingly, though Jesus loved Martha and her sister and Lazarus, after having heard that Lazarus was ill, he stayed two days longer in the place where he was.
When Jesus arrived, he found that Lazarus had already been in the tomb four days. Now Bethany was near Jerusalem, some two miles away, and many of the Jews had come to Martha and Mary to console them about their brother. When Martha heard that Jesus was coming, she went and met him, while Mary stayed at home. Martha said to Jesus, “Lord, if you had been here, my brother would not have died. But even now I know that God will give you whatever you ask of him.” Jesus said to her, “Your brother will rise again.” Martha said to him, “I know that he will rise again in the resurrection on the last day.” Jesus said to her, “I am the resurrection and the life. Those who believe in me, even though they die, will live, and everyone who lives and believes in me will never die. Do you believe this?” She said to him, “Yes, Lord, I believe that you are the Messiah, the Son of God, the one coming into the world.”
John 11:1-6, 17-27 (NRSV)