'Set apart' in the Bible

That thou shalt set apart unto the LORD all that openeth the matrix, and every firstling that cometh of a beast which thou hast; the males shall be the LORD'S.

But know that the LORD hath set apart him that is godly for himself: the LORD will hear when I call unto him.

In thee have they discovered their fathers' nakedness: in thee have they humbled her that was set apart for pollution.