'Negligent' in the Bible

My sons, be not now negligent; for Jehovah has chosen you to stand before him, to do service unto him, and to be his ministers and incense-burners.

Be not negligent of the gift that is in thee, which has been given to thee through prophecy, with imposition of the hands of the elderhood.

how shall we escape if we have been negligent of so great salvation, which, having had its commencement in being spoken of by the Lord, has been confirmed to us by those who have heard;