'Lightly' in the Bible

But Jeshurun waxed fat, and kicked: Thou art waxed fat, thou art grown thick, thou art become sleek; Then he forsook God who made him, And lightly esteemed the Rock of his salvation.

Therefore Jehovah, the God of Israel, saith, I said indeed that thy house, and the house of thy father, should walk before me for ever: but now Jehovah saith, Be it far from me; for them that honor me I will honor, and they that despise me shall be lightly esteemed.

And Saul's servants spake those words in the ears of David. And David said, Seemeth it to you a light thing to be the king's son-in-law, seeing that I am a poor man, and lightly esteemed?

Better is he that is lightly esteemed, and hath a servant, Than he that honoreth himself, and lacketh bread.

and ye have forgotten the exhortation which reasoneth with you as with sons, My son, regard not lightly the chastening of the Lord, Nor faint when thou art reproved of him;