'Fearing' in the Bible

For the Lord has made the Jordan a border between us and you, you sons of Reuben and sons of Gad; you have no part in the Lord.” So your sons (descendants) may cause our sons to stop fearing the Lord.’

The backslider in heart will have his fill with his own [rotten] ways,But a good man will be satisfied with his ways [the godly thought and action which his heart pursues and in which he delights].