The command to love one another still stands today. When we love our neighbours as we love ourselves we will fulfil the commandments. Sometimes we can break Gods commandments, dismiss or distort them.
Loving one another is evidence that we are Gods children. If we see a need we have an obligation to fill it if we have the means. Jesus will show us the needs of others and he will convict us. We can often be the answer to practical needs.
Love is an action. Love never ceases because God never ceases. Loving one another is a response we can have from God loving us. His love is unconditional, he can chastise us because he loves us.
We have a responsibility to show God to our generation
1 John