require at thine hand
3:18 require at thine hand. God repeatedly warns the ungodly of judgment to come, through His prophets in ancient times, and through His Word (and those who are His witnesses) today. The responsibility of the prophet—or the modern Christian witness—to get this critical message to the lost is thus inestimably great. In effect, for a believer to fail to witness to those he is able to reach would make him their executioner. More important by far, however, is the certainty that, whether they hear a warning or not, the ungodly will die in their sins, for they are already “without excuse” (Romans 1:20), having rejected the witness in the creation itself. Note also Ezekiel 33:14-19.