Luke 10:27 And he answering said, Thou shalt love the Lord thy God with all thy heart, and with all thy soul, and with all thy strength, and with all thy mind; and thy neighbour as thyself.
All is a small word with a powerful meaning. We are either all in or out , no other choice.

All our hearts , all our souls , all our strength and all our minds. Until we cover all the all's we can be Peter in Matthew 26:74-75 and we do not even know it. Take time and look at your heart , soul, strength and mind , see if any of those are still in the world and not belonging to God.
Peter denied Jesus because he was not ready to really follow Jesus. We have made saying we love Jesus, as Peter did before he was ready to follow. We have made loving God easy and about fun , when it is the hardest thing we will ever do on earth...