'Let Us' in the Bible

Therefore let us keep the feast, not with old yeast, neither with the yeast of malice and wickedness, but with the unleavened bread of sincerity and truth.

Neither let us commit sexual immorality, as some of them committed, and in one day twenty-three thousand fell.

Neither let us test the Christ, as some of them tested, and perished by the serpents.

If I fought with animals at Ephesus for human purposes, what does it profit me? If the dead are not raised, then "let us eat and drink, for tomorrow we die."

As we have borne the image of those made of dust, let us also bear the image of the heavenly.