We must have faith in Him, but even the devils know the truth and yet they tremble.
James 2:19 King James Version (KJV)
19 Thou believest that there is one God; thou doest well: the devils also believe, and tremble.
Many Christians continue in the bond of iniquity, but they will be found out.
Luke 13:26-28 King James Version (KJV)
26 Then shall ye begin to say, We have eaten and drunk in thy presence, and thou hast taught in our streets.
27 But he shall say, I tell you, I know you not whence ye are; depart from me, all ye workers of iniquity.
28 There shall be weeping and gnashing of teeth, when ye shall see Abraham, and Isaac, and Jacob, and all the prophets, in the kingdom of God, and you yourselves thrust out.