Wouldst thou know what that Christ that died for sinners is doing in that place whither he is gone? Then read Hebrews 7:24.
Wouldst thou know who shall have life by him, read 1 Timothy 1:14, 15, and Romans 5:6-8, which say, 'Christ died' for sinners, 'for the ungodly.'
Wouldst thou know whether they that live and die in their sins shall go to heaven or not? Then read 1 Corinthians 6:10; Revelation 21:8, 27, which saith, 'They shall have their part in the lake which burneth with fire and brimstone.'
Wouldst thou know whether man's obedience will obtain that Christ should die for them, or save them? Then read Mark 2:17; Romans 5:6, 7.
Wouldst thou know whether righteousness, justification, and sanctification do come through the virtue of Christ's blood? Compare Romans 5:9 with Hebrews 12:12.
Wouldst thou know whether natural man can abstain from the outward act of sin against the law, merely by a principle of nature? Then compare well Romans 2:14, with Philippians 3:6.
Wouldst thou know whether a man by nature may know something of the invisible things of God? Compare seriously Romans 1:20, 21 with 2:14, 15.
Wouldst thou know how far a man may go on in a profession of the gospel, and yet fall away? Then read Hebrews 6:4-6. 'They may taste the good Word of God, and the powers of the world to come.' They may taste 'the heavenly gift, and be partakers of the Holy Ghost,' and yet so fall as never to be recovered, or renewed again unto repentance. See also Luke 13.
Wouldst thou know how hard it is to go to heaven? Read Matthew 7:13, 14; Luke 13:24.
Wouldst thou know whether a man by nature be a friend to God, or an enemy? Then read Romans 5:10; Colossians 1:21.