First. In order to be prepared for our great and solemn work, it is absolutely necessary that we set an infinite value upon immortal souls; that we often endeavour to affect our minds with the dreadful loss sustained by an unconverted soul launched into eternity. It becomes us to fix in our minds the awful doctrine of eternal punishment, and to realize frequently the inconceivably awful condition of this vast country, lying in the arms of the wicked one.
If we have not this awful sense of the value of souls, it is impossible that we can feel aright in any other part of our work, and in this case, it had been better for us to have been in any other situation rather than in that of a Missionary. Oh! may our hearts bleed over these poor idolaters, and may their case lie with continued weight on our minds, that we may resemble that eminent Missionary, who compared the travail of his soul, on account of the spiritual state of those committed to his charge, to the pains of childbirth.

But while we thus mourn over their miserable condition, we should not be discouraged, as though their recovery were impossible. He who raised the sottish and brutalized Britons to sit in heavenly places in Christ Jesus, can raise these slaves of superstition, purify their hearts by faith, and make them worshippers of the one God in spirit and in truth. The promises are fully sufficient to remove our doubts, and to make us anticipate that not very distant period when He will famish all the gods of India, and cause these very idolaters to cast their idols to the moles and to the bats, and renounce forever the work of their own hands.

Related Bible verses:
John 3:16 For God so loved the world that He gave His only begotten Son, that whoever believes in Him should not perish but have everlasting life.
John 14:6 Jesus said to him, “I am the way, the truth, and the life. No one comes to the Father except through Me.”
Acts 4:12 Nor is there salvation in any other, for there is no other name under heaven given among men by which we must be saved.
Rom 9:1-4 I tell the truth in Christ, I am not lying, my conscience also bearing me witness in the Holy Spirit, 2 that I have great sorrow and continual grief in my heart. 3 For I could wish that I myself were accursed from Christ for my brethren, my countrymen according to the flesh…