What does John 11:24 mean?

Mary and Martha are close followers of Christ's teachings (Luke 10:38–42). In earlier statements, Jesus has spoken about those who believe in Him experiencing an eventual resurrection (John 3:15–16; 6:39–40). That discipleship has clearly given these sisters great faith in Jesus, even in the face of doubts (John 11:21–22). Just as Jesus' mother didn't demand a specific solution (John 2:3–5), Martha didn't come right out and beg Jesus to raise her brother from the dead (John 11:17). So, when Jesus reassured her that Lazarus "will rise" (John 11:23), she most likely took that to mean Jesus did not intend to perform a miracle at that moment.

In other words, Martha's response here might come with a hint of disappointment. Her mention of God granting any request made by Jesus resulted in Him saying "your brother will rise again." He did not say, "I'll ask God to bring him back." Rather than despairing, or reacting in anger, Martha's answer implies that she has an eternal perspective (Hebrews 11:13–16). She knows that, even if death wins this battle, it has already lost the war (Hebrews 11:39–40).

Martha's next words with Jesus back up the suggestion that she's faithful, even amidst her doubt and pain. Those are inspired by the fifth of seven "I Am" statements made by Jesus in the gospel of John.