'Be Careful' in the Bible

"Be careful not to look with scorn on a single one of these little children, for I tell you that in heaven their angels have uninterrupted access to my Father in heaven.

As a skilled architect, in accordance with God's unmerited favor given to me, I laid a foundation, and now another is building upon it. But every builder must be careful how he builds upon it;

It is a message to be trusted, and I want you to be emphatic about these things, so that those who believe in God may be careful to take the lead in doing good. These things are right and render service to mankind.

But he said to me: "You must be careful not to do that; I am only a fellow-slave of yours, of your brothers the prophets, and of the people who practice the truths contained in this book. Worship God."