Consecrate
Pray
blessing
recover
The tone of the passage is positive. It narrates a story of how the earl entreated the bishop to go in to one of his servants who was ill, and pray for him.
The overall positive tone of this passage suggests that all the gaps will be filled by positive words.
Answer 1: Consecrate
To consecrate is to make clean, while to desecrate, on the contrary, is to make impure.
The Bishop, in this passage, was called to consecrate the Earl Addi's church
Answer 2: Pray
"bless" does not fit into this gap because it will not make the sentence to be grammatically correct.
".....pray for him" is correct, "...bless for him" isn't.
Answer 3: blessing
The earl cannot entreat the bishop to curse his servant whose life was of great consequence to him. Therefore, curse cannot be correct.
Answer 4: recover
To deteriorate is to get worse. This does not fit the sentence.
The correct choice is "recover"