1 John 2:15
15Don’t love the world or the things that are in the world. If anyone loves the world, the Father’s love isn’t in him.
Don’t love the world or what belongs to it. If anyone loves the world, the Father’s love is not in him. Wesley, to all ages: pursue your victory by overcoming the world. Seek happiness in visible things and you do not love God.
Two loves cannot reign in one heart. This is not hatred of people or of creation as gift (4:1–5 of 1 Timothy already fenced that). It is the world as rival happiness. Grace that can be received can also be spent on visible things instead of the Father.
Calvin: the only rule for living religiously is to love God; but occupied with vain love of the world we turn thoughts another way. This vanity must first be torn away. The world: everything connected with present life apart from the kingdom and the hope of eternal life—corruptions of every kind, allurements by which man withdraws from God.
We necessarily forget God when we regard nothing so much as the earth. A corrupt lust that thinks no more of immortal life than mute animals cannot be of God. The Father’s love and the world’s love do not cohabit.