I gave my heart to Jesus?? Jesus lives in my heart??
Technically, Jesus has given to me His OWN heart. In Christ, I am a new creation with the throngs of His very heart. I didn't give up me, no - I simply became a spirit born creature of Christ. I am no longer the old flesh driven version of me, I am the new upgraded spirit governed version of me.
I have been infused with Christ Himself and given a personal identity (new nature) wrapped around both Him and His own goodness. Yes. We become who and/or what we seek after. Ezekiel 36:26.
Folks. Jesus doesn't walk around IN my heart, HIS nature dwells IN my heart.
Paul prays in Ephesians 3:16-17 (ESV):
"that according to the riches of his glory he may grant you to be strengthened with power through his Spirit in your inner being, 17 so that Christ may dwell in your hearts through faith—that you, being rooted and grounded in love ... "
In the Greek "so that Christ may dwell in your heart" is a metaphor.
By faith and being rooted in HIS love, the very nature of Christ dwells inside us. We take on His character, and we take on His image. We love like Jesus. We sound like Jesus. We move in this earth with power and authority like Jesus!
I didn't give Jesus my heart, and He isn't walking around inside me ... I have HIS heart, and HIS nature as my new nature!