The message of the cross is foolish to those who are headed for destruction! But we who are being saved KNOW it is the very power of God.
You were dead because of your sins and because your sinful nature was not yet cut away. Then God made you alive with Christ, for he forgave ALL our sins. He cancelled the record of the charges against us and took it away by nailing it to the cross. In this way, he disarmed the spiritual rulers and authorities. He shamed them publicly by his victory over them on the cross.
Mark 8:34 (NLT)
Then, calling to the crowd to join his disciples, Jesus said, “If any of you wants to be my follower, you must turn from your selfish ways, take up your cross, and follow me.”
Our salvation was a gift, it cost us nothing, but cost Jesus everything.
Following Jesus is a choice and requires obedience.