'Carefully' in the Bible

Such persons are mere babes. But solid food is for adults--that is, for those who through constant practice have their spiritual faculties carefully trained to distinguish good from evil.

looking carefully lest there be any man that falleth short of the grace of God; lest any root of bitterness springing up trouble you , and thereby the many be defiled;

For ye know how that afterward, when he would have inherited the blessing, he was rejected: for he found no place of repentance, though he sought it carefully with tears.

Remember your leaders who have spoken God’s word to you. As you carefully observe the outcome of their lives, imitate their faith.