Love
SsNote: Once love has an explanation or reason then it starts loosing it essence says FELIX. When you love a man because of something when that things leave the man you will hardly love the man again.
Not that we first love God but that he loved us first and he gave us the opportunity to be partakers of His heavenly treasures.
I gave God nothing before he gave me the gift of life, provisions and every other invaluable things that aids my growth and well being.
Most importantly genuine love that is popularly regarded as agape love will make you be a radical giver. John 3:16 says for God so love the world that he gave his only begotten son that whosoever believe in him should not perish but have everlasting life. It is God's unsearchable love that prompt him to give.