Speaking from a metaphysical point of view, the Kingdom of Heaven may be attained by the way of repentance. If we have offended a friend, and he turns away from us, and we in fullness of heart ask forgiveness, his heart will melt towards us. If, on the other hand, we close our heart, it becomes frozen. Repenting and asking for pardon not only melt the heart of those we have offended, but also of those in the world unseen.