We Christians should always endeavor to place a cage around our hearts it is very important as well as mandatory and we can successfully achieve that by what by the spirit of God and the word of God sieved by our spirit.The Bible which is God's word gave us this admonition to guide our hearts because out of it are the issues of life so we can see how necessary that is.
I pray that God should take away every stony heart or every pharaoh like heart and substitute with that heart of flesh and we should also likewise have this belief and also try to teach these belief right from the word of God to friends,young children and all which will foster a wonderful relationship in this present society.