'Be Careful' in the Bible
According to the grace (the special endowment for my task) of God bestowed on me, like a skillful architect and master builder I laid [the] foundation, and now another [man] is building upon it. But let each [man] be careful how he builds upon it,
Only be careful that this power of choice (this permission and liberty to do as you please) which is yours, does not [somehow] become a hindrance (cause of stumbling) to the weak or overscrupulous [giving them an impulse to sin].
Therefore, whoever thinks he stands must be careful not to fall!