Here is some direction if you want to read ahead in preparation for corporate worship and word on Sunday.
Read Matthew 8:1-4
The same story is told by Mark in 1:40-45 and Luke in 5:12-16. Read it there too but then come back and read it in Matthew a couple more times as Matthew is where we will land on Sunday morning.
Make observations about the leper. What does he say and do? What does this show us about him?
What can we see about his faith and hope?
Make observations about Jesus. What does he say and do? What does this show us about him?
What can we see about his love and power?
(If you are up for the special navy-seal level preparation you can go back and read Leviticus 13 and 14 as an explanation of what Jesus commands in Matthew 8:4)