Doctrine and love. one should show christian love for Christ.
How do we do that? by following Jesus doctrines as Jesus taught us. John 14:23

We should be proud of Jesus and his doctines and never compromise them for the sake of unity.

it is not loving ones neighbor to hide from them what Christ doctrines are.
Lutheran's love doctrine.
we Love and are proud of it.
because it from Jesus. his bible is full of his doctrines.
to say we are not proud of doctrine is to say we are not proud of God's word.Which never lie's and alway's has our best interest at it's heart. Our Jesus

Chief of sinner's though I be, Jesus still died for me.