Can Christians keep vigil?

Christians are not allowed to keep vigil. Christian funerals should not be confused with feudal superstitions. God is sacred and taboo. If there is idolatry, God will punish, choose time, watch Feng Shui and spend money. Sacrificing incense, lighting candles, drinking tea, flushing frogs, burning incense and gold, returning to lead souls and installing portraits are all examples of prohibition. This answer is for reference only. Don't be blindly superstitious.