Serving God by serving people

Isaiah 15:1-9
A prophecy against Moab
Ar, Kir in Mob are ruined , destroyed in a night!
The Moabites were descendants of Abraham's nephew, Lot. They occupied the plateau land east of the Dead Sea. It was from Moab that Ruth came.
At times the Moabites were on good terms with the Israelites, but they had no share in Israel's faith.
Isaiah is stirred to sympathy at the spectacle of Maob's suffering.
The cities of Moab fell to Assyria in successive campaigns. They were to fall again to Nebuchadnezzar of Babylon.
Why?
The people of Moab were been killed and flee away from their home to other countries. Their home's water is dried up and the grass is withered; the vegetation is gone and nothing green is left.
The Lord's wrath comes to Moab also, no one can escape from God's propose.
How?
Ruin in a night, the end of the world will come in very short time. Ready myself to that day, prepare what I need for the calling of the Lord. And serving God by serving people.