Luke 16:19–31 tells us that there are some who will not believe even if they see someone rise from the dead. Apologetic arguments and ministries of mercy are good things and powerful witnesses to the truth of God, but they cannot soften a hard heart apart from the work of the Holy Spirit. This is why the ministry of prayer is so important to world missions and evangelism. Pray for a country this week that is openly hostile to the Gospel.
For further study:
The Bible in a year: