The important thing is after receiving the prayer answer.

When ten leprous men who stood at a distance met Jesus and raised their voices, saying,

“Jesus, Master, have mercy on us!” (Lk. 17:12-13)

At that time, Jesus said to them, “Go and show yourselves to the priests” (v. 14).

Why did Jesus say that?

Although Jesus clearly knew that ten leprous men stood at the distance when they met Jesus (v. 12)

How could He say to them, “Go and show yourselves to the priests”? (v. 14)

What is surprising is that the ten lepers obeyed Jesus' word

Even though they couldn’t understand His word with their reason.

But as they were obeying His word, they were cleansed (v. 14).

On the way to the priests, their leprosy got healed (v. 14).

But among the ten leprous, only the Samaritan, the Gentile, came back to Jesus

When he saw that he had been healed, and glorified God with a loud voice,

And he fell on his face at His feet, giving thanks to Him (vv. 15-16).

To him Jesus said, “Stand up and go; your faith has made you well” (v. 19).

We should ask the Lord, ‘Lord, have mercy on us!’

And we must obey the Lord’s word.  When we obey Him, our prayer will be answered.

The important thing is after receiving the prayer answer.

We should glorify God and give thanks to Him. 

When we give thanks to God, the Lord will do far more abundantly beyond all that we ask or think

(Eph. 3:20).