Leviticus 19:14

You must not curse a deaf person or put a stumbling block in front of a blind person. You must fear your God; I am the Lord.

God is capable of making the deaf person hear, and restoring sight to the blind. If someone will not hear the truth, are they deaf? If someone will not see the light of Christ, are they blind? Who are the blind? Who are the deaf? Perhaps God is glorified by their weakness in one area, or by a strength you know nothing of? Be challenged to pray for one another. Remember, it is only because of God's miraculous grace that we see Jesus, or hear and believe the truth of the gospel. Extend to others the same mercy that our Lord extends to you.