'Illegitimate' in the Bible

And Aaron's sons Nadab and Abihu each took his censer, and they put fire in them and placed incense on it; then they presented {before} Yahweh illegitimate fire, which he had not commanded them.

No one of illegitimate birth may enter the Lord’s assembly; none of his descendants, even to the tenth generation, may enter the Lord’s assembly.

When the Lord first spoke through Hosea, he said to him, "Go marry a prostitute who will bear illegitimate children conceived through prostitution, because the nation continually commits spiritual prostitution by turning away from the Lord."

They betrayed the Lord;indeed, they gave birth to illegitimate children.Now the New Moon will devour themalong with their fields.

You are doing your father's actions." They told him, "We're not illegitimate children. We have one Father, God himself."

But if you are without discipline—which all receive—then you are illegitimate children and not sons.