Acts 23:14

We have bound ourselves under a great curse [α ν α θ ε μ α τ ι α ν ε θ ε μ α τ ι σ α μ ε ν ε α υ τ ο υ ς]. Lit., we have anathematized ourselves with an anathema. A very strong expression. For similar expressions, see Luke 22:15; John 3:29; Acts 4:17.