I was deeply touched by your words: “I am happy for the sentence laid upon me…. For God has taken all my burdens upon Himself. Consequently, I praise the Lord for all His good deeds which He as our Saviour keeps on dedicating to us…. My life is in God, and God’s is in mine….”
Cornelius, the Lord has placed you there in jail with a wonderful purpose.
You should not only witness for the Lord in word and deed to Hendrik and the other prisoners, but also to the jailers. That is what Paul did when he was in jail. Read his letter to the Philippians.
Also read: Genesis 39 to 41, about Joseph in jail; Daniel 6, about his experiences in the lion’s den; and Acts 12, about Peter in jail. They all — Paul, Joseph, Daniel, and Peter — did wonderful work for the Lord also in jail. You should do the same, by the power of God!