2 Chronicles 7:14 KJV

If my people, which are called by my name, shall humble themselves, and pray, and seek my face, and turn from their wicked ways; then will I hear from heaven, and will forgive their sin, and will heal their land.

Mark 16:15-18 KJV

And he said unto them, Go ye into all the world, and preach the gospel to every creature. [16] He that believeth and is baptized shall be saved; but he that believeth not shall be damned. [17] And these signs shall follow them that believe; In my name shall they cast out devils; they shall speak with new tongues; [18] They shall take up serpents; and if they drink any deadly thing, it shall not hurt them; they shall lay hands on the sick, and they shall recover.

Matthew 9:35-38 KJV

And Jesus went about all the cities and villages, teaching in their synagogues, and preaching the gospel of the kingdom, and healing every sickness and every disease among the people. [36] But when he saw the multitudes, he was moved with compassion on them, because they fainted, and were scattered abroad, as sheep having no shepherd. [37] Then saith he unto his disciples, The harvest truly is plenteous, but the labourers are few; [38] Pray ye therefore the Lord of the harvest, that he will send forth labourers into his harvest.

Acts 19:17-20 KJV

And this was known to all the Jews and Greeks also dwelling at Ephesus; and fear fell on them all, and the name of the Lord Jesus was magnified. [18] And many that believed came, and confessed, and shewed their deeds. [19] Many of them also which used curious arts brought their books together, and burned them before all men : and they counted the price of them, and found it fifty thousand pieces of silver. [20] So mightily grew the word of God and prevailed.