Who or what did Lencho have faith in? What did he do?
Lencho had complete faith in God. He believed that God's eyes see everything, even what is deep in one's conscience, and that God would not deny him the help he requested.
When his crops were ruined by the hailstorm, he wrote a letter to God asking for a hundred pesos to sow his field again and to live until the crop comes. He put the letter inside an envelope with 'To God' written on it, affixed a stamp, and dropped it into the mailbox at the post office.
Explanation
The context clearly establishes Lencho's unwavering faith in God, stating that his one hope was 'the help of God' and that he believed God could not make a mistake or deny his request. Driven by this absolute faith, when his crops were destroyed, he took the action of writing a letter directly to God asking for a hundred pesos and mailing it, demonstrating his sincere belief that God would provide.