Deuteronomy 4:23

"Only take heed to thyself, and keep thy soul diligently, lest thou forget the things which thine eyes have seen, and lest they depart from thy heart all the days of thy life: but teach them thy sons, and thy sons' sons;"

"For thus saith the Lord GOD; I will even deal with thee as thou hast done, which hast despised the oath in breaking the covenant."

"The earth also is defiled under the inhabitants thereof; because they have transgressed the laws, changed the ordinance, broken the everlasting covenant."

"Take heed, brethren, lest there be in any of you an evil heart of unbelief, in departing from the living God."

"For when I shall have brought them into the land which I sware unto their fathers, that floweth with milk and honey; and they shall have eaten and filled themselves, and waxen fat; then will they turn unto other gods, and serve them, and provoke me, and break my covenant."

"When ye have transgressed the covenant of the LORD your God, which he commanded you, and have gone and served other gods, and bowed yourselves to them; then shall the anger of the LORD be kindled against you, and ye shall perish quickly from off the good land which he hath given unto you."

"Be ye mindful always of his covenant; the word which he commanded to a thousand generations;"

"And Jesus answered and said unto them, Take heed that no man deceive you."

"Then men shall say, Because they have forsaken the covenant of the LORD God of their fathers, which he made with them when he brought them forth out of the land of Egypt:"

"How long wilt thou go about, O thou backsliding daughter? for the LORD hath created a new thing in the earth, A woman shall compass a man."