Isn't it arrogant of Christians
to be sure that they're going to heaven?
Answer: The world religions claim that man must earn his salvation by good works, deeds of charity, observing church rituals, and so on. As a result, their followers
are always uncertain of whether they have done enough to please God. When the believer asks people if they think they are going to heaven, most will say, "I think so," or "I hope so."
The real Christian, however, does not say, "I think" or "I hope." He is able to say, "I know." Those who believe in salvation by works are taken aback. How could anyone
be so arrogant as to be sure that they have pleased God? This is a perfect opportunity for the believer to show the difference between God's plan of salvation and the way man tries to make for himself.
The world religions say that man's good works can cancel out or outweigh his bad ones, thus earning God's favor. But the Bible says that before God all of us have become like one who is unclean, and all our righteousnessess are as filthy rags (Isa. 64:6). Our sins are far too serious to be cancelled out by our feeble attempts to do good.
"Will the Lord be pleased with thousands of rams, or with ten thousands of rivers of oil? shall I give my firstborn for my transgression, the fruit of my body for the
sin of my soul?" (Micah 6:7). And Elihu pointed out to Job that our human efforts to do good have no real meaning beyond this world: "If thou be righteous, what givest thou Him? or what receiveth He of thine hand? ... Thy righteousness may profit the son of man" (Job 35:7-8).
Knowing this, it would be foolish for the Christian to pretend that he had earned God's favor by good works. The Bible assures us that salvation comes from God alone, not from man (Isa. 26:1). It is His free gift, not something we can earn (Eph. 2:8-9). As lost sinners, we were completely unworthy of salvation, but Christ chose to die for us to save us from God's wrath against sin (Rom. 5:6-9).
It is exactly because the Christian is not worthy to go to heaven that he can be so sure he is going there. His salvation does not depend on himself. It depends on the finished work of the Lord Jesus Christ, and so he can speak with the same confidence as the Apostle Paul: "The Lord shall deliver me from every evil work, and will preserve me unto His heavenly kingdom: to whom be glory for ever and ever. Amen" (2 Tim. 4:18).