I was standing in Heaven. I saw some people that were there. These people were cast into Hell.

 This is what the Lord told me:

 Many people in the body of Christ who are saved have turned back and went back into the life of sin. The thought is “I’m already saved, so if I sin grace will cover it.”

Ephesians 2:8-10

 8 For by grace are ye saved through faith; and that not of yourselves: it is the gift of God: 9 Not of works, lest any man should boast. 10 For we are his workmanship, created in Christ Jesus unto good works, which God hath before ordained that we should walk in them.

Matthew 7:6-12

 6 Give not that which is holy unto the dogs, neither cast ye your pearls before swine, lest they trample them under their feet, and turn again and rend you.

 The dogs are the way the uncircumcised gentiles live. The swine is the unclean thing.

Philippians 2:12 KJV

 12 Wherefore, my beloved, as ye have always obeyed, not as in my presence only, but now much more in my absence, work out your own salvation with fear and trembling.

Philippians 2:12 Amplified Bible (AMP)

 12 So then, my dear ones, just as you have always obeyed [my instructions with enthusiasm], not only in my presence, but now much more in my absence, continue to work out your salvation [that is, cultivate it, bring it to full effect, actively pursue spiritual maturity] with awe-inspired fear and trembling [using serious caution and critical self-evaluation to avoid anything that might offend God or discredit the name of Christ].

 The Lord be with you.

Brother Al