2 Thessalonians 2:6

What withholdeth [τ ο κ α τ ε χ ο ν]. Better restraineth. The verb means to hold fast, as Luke 8:15 : to hold back, as Luke 4:42. See on Romans 1:18. He refers to some power which hinders the revelation of the man of sin or Antichrist.

In his time [ε ν τ ω α υ τ ο υ κ α ι ρ ω]. Better, in his own season, Not before his appointed season.