Hebrews 4:1; Hebrews 11:37; Hebrews 12:15

Hebrews 4:1

1 Therefore, since the promise of entering his rest still stands, let us be careful that none of you be found to have fallen short of it.

Hebrews 11:37

37 They were put to death by stoning; they were sawed in two; they were killed by the sword. They went about in sheepskins and goatskins, destitute, persecuted and mistreated—

Hebrews 12:15

15 See to it that no one falls short of the grace of God and that no bitter root grows up to cause trouble and defile many.