'Heed' in the Bible

“If they will not believe you or pay attention to the evidence of the first sign, they may believe the evidence of the second sign.

But if they will not believe these two signs or pay attention to what you say, you are to take some water from the Nile and pour it on the dry ground; and the water which you take out of the river will turn into blood on the dry ground.”

But Moses said to the Lord, “Look, [my own people] the Israelites have not listened to me; so how then will Pharaoh listen to me, for I am unskilled and inept in speech?”

But when Pharaoh saw that there was [temporary] relief, he hardened his heart and would not listen or pay attention to them, just as the Lord had said.

But the Lord hardened the heart of Pharaoh, and he did not listen or pay attention to them, just as the Lord had told Moses.

You shall set barriers for the people all around [the mountain], saying, ‘Beware that you do not go up on the mountain or touch its border; whoever touches the mountain must be put to death.

Now concerning everything which I have said to you, be on your guard; do not mention the name of other gods [either in a blessing or in a curse]; do not let such speech be heard [coming] from your mouth.

Be on your guard before Him, listen to and obey His voice; do not be rebellious toward Him or provoke Him, for He will not pardon your transgression, since My Name (authority) is in Him.

Watch yourself so that you do not make a covenant (solemn agreement, treaty) with the inhabitants of the land into which you are going, or it will become a [dangerous] trap among you.