The clearest, most certain argument for the reality of heaven is the testimony of Scripture.
Since “life and immortality” have been “brought to light” through the “gospel” (II Timothy 1:10), it is to be expected that the New Testament will contain more information on heaven than the Old Testament. Nonetheless, there are clear allusions to the eternal reward of the faithful in the O.T. as well.
Abraham certainly had some concept of heaven, for Scripture notes that “he looked for the city that has the foundations, whose builder and maker is God.” The patriarchs died “in faith” and confessed that they were but pilgrims on the earth. They desired a “better country,” and that place God had “prepared for them” (Hebrews 11:9-16).
Moses forsook Egypt and chose ill-treatment with Jehovah’s people, accounting the reproach of Christ greater riches than the treasures of Egypt, looking toward to “the recompense of reward” (Hebrews 11:24ff). David believed he ultimately would be with his deceased baby in a better place (II Samuel 12:23).
It goes without saying that our Lord Jesus Christ spoke frequently of heaven. He promised that those enduring persecution would have a reward in heaven (Matthew 5:10-12). He encourages us to lay up treasures in heaven that will abide (Matthew 6:19-21). In leaving earth’s environment, he promised to prepare a place where the faithful might ultimately be with him (John 14:2-3). The New Testament documents are punctuated repeatedly with promises of heaven for those devoted to Christ (cf. Philippians 3:20-21; I Peter 1:3-5).
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