Bible Verses About Affections: Should not grow cold

Then believed they his words; They sang his praise.

They soon forgat his works; They waited not for his counsel,

And because iniquity shall be multiplied, the love of the many shall wax cold.

Where then is that gratulation of yourselves? for I bear you witness, that, if possible, ye would have plucked out your eyes and given them to me.

But I have this against thee, that thou didst leave thy first love.