I think the very word 'fear' causes a lot of consternation. We are, according to some Christian traditions, both to love God and to fear God. The two aren't compatible. You cannot love someone or anything that you fear.
Where it is said (and my quote could be wrong, because I'm not that familiar with the Christian Bible) We are to:
"Love thy God with all thy might, with all thy heart and with all thy soul, and thy neigbour as thy self."
It means, I feel, to put our central focus towards being guided by the god-part of our own selves; that which lies within; the Real us, rather than the ego-conditioning of our thinking.
The god-part of our neigbour is exactly the same AND IS the god-part in us, too. But we can only perform loving actions at the mental and physical levels. Hence, love thy neighbour as thyself.