Who can love more? The sin-bearer or The Father who gave up His son?
It was for His glory to glorify The Father. In some sense, God the Father, The Son and The Holy Spirit all want to show their love. It is their essence, being. If I dare to say they are jealous of each other. Imagine a love so great it provokes jealousy to say; I love you more.
“I have been crucified with Christ and I no longer live, but Christ lives in me. The life I now live in the body, I live by faith in the Son of God, who loved me and gave himself for me.” Galatians 2:20
What do you love more? We have a jealous God who deserves all our love.
‘Love the Lord your God with all your heart and with all your soul and with all your mind.’ Mathew 22:37