Passage
Martha therefore said to Jesus, Lord, if thou hadst been here, my brother had not died;
Martha therefore said to Jesus, Lord, if thou hadst been here, my brother had not died;
John 11:19 and many of the Jews came to Martha and Mary, that they might console them concerning their brother.
John 11:20 Martha then, when she heard Jesus is coming, went to meet him; but Mary sat in the house.
John 11:21 Martha therefore said to Jesus, Lord, if thou hadst been here, my brother had not died;
John 11:22 but even now I know, that whatsoever thou shalt ask of God, God will give thee.
John 11:23 Jesus says to her, Thy brother shall rise again.
The verse centers on "martha", "therefore", "said", "jesus", "lord", "thou", "hadst", and "been". It is saying that the verse draws attention to "martha" and "therefore", so its meaning should be read from those terms before moving to application.
The nearby context moves from verse 20's "Martha then when she heard Jesus is..." into verse 22's "but even now I know that whatsoever...", so "martha" and "therefore" belong inside that flow. In John context, the local focus is the identity of Jesus, new birth, eternal life, and belief and unbelief.
A plain takeaway is to answer the verse's own emphasis on "martha" and "therefore" with trust shaped by these words, not by a vague optimism outside the passage.