'Covet' in the Bible

What shall we say then? Is the law sin? God forbid. Nay, I had not known sin, but by the law: for I had not known lust, except the law had said, Thou shalt not covet.

For this, Thou shalt not commit adultery, Thou shalt not kill, Thou shalt not steal, Thou shalt not bear false witness, Thou shalt not covet; and if there be any other commandment, it is briefly comprehended in this saying, namely, Thou shalt love thy neighbour as thyself.

But covet earnestly the best gifts: and yet shew I unto you a more excellent way.

Wherefore, brethren, covet to prophesy, and forbid not to speak with tongues.