And you shall love the LORD your God with all your heart, with all your soul, with all your mind, and with all your strength. Mark 12:30
We love Him because He first loved us. 1 John 4:19
Now hope does not disappoint, because the love of God has been poured out in our hearts by the Holy Spirit who was given us. For when we were still without strength, in due time Christ died for the ungodly. For scarcely for a righteous man will one die: yet perhaps for a good man someone would even dare to die. But God demonstrates His own love toward us, in that while we were still sinners, Christ died for us. Romans 5:6-8.