Did God Change His Mind?

How many times do we read about a Christian who is faced with a loved one's beliefs that come in conflict with their own?

Lots of people won't like what I have to say here.  
But it needs to be said,
because sometimes the things we least want to hear
are the very things that we most need to hear.

Then they have to decide -
were they wrong before, misinterpreting God's Word?  
Did God change His mind?  
Is this a new time with new laws from God?  Something else?

You may have noticed - I said "hear".  
Even though this is in writing and will most likely be "read". 
Here's why the word "hear" is important -

Mk 4:1 Again Jesus began to teach by the lake. The crowd that gathered around him was so large that he got into a boat and sat in it out on the lake, while all the people were along the shore at the water’s edge. 2 He taught them many things by parables, and in his teaching said: 3 “Listen! A farmer went out to sow his seed. 4 As he was scattering the seed, some fell along the path, and the birds came and ate it up. 5 Some fell on rocky places, where it did not have much soil. It sprang up quickly, because the soil was shallow. 6 But when the sun came up, the plants were scorched, and they withered because they had no root. 7 Other seed fell among thorns, which grew up and choked the plants, so that they did not bear grain. 8 Still other seed fell on good soil. It came up, grew and produced a crop, multiplying thirty, sixty, or even a hundred times.”
Mk 4:9 Then Jesus said, “He who has ears to hear, let him hear.”
Mk 4:10 When he was alone, the Twelve and the others around him asked him about the parables. 11 He told them, “The secret of the kingdom of God has been given to you. But to those on the outside everything is said in parables 12 so that,
“ ‘they may be ever seeing but never perceiving,
and ever hearing but never understanding;
otherwise they might turn and be forgiven!’’”

This is a parable about people who have received God's Word.  In some of them - it never takes hold.  For others - it may take hold for a time, but does not last.  For the few remaining - it does take hold and grows.

This same parable is told in Luke.

Mk 4:21 He said to them, “Do you bring in a lamp to put it under a bowl or a bed? Instead, don’t you put it on its stand? 22 For whatever is hidden is meant to be disclosed, and whatever is concealed is meant to be brought out into the open. 23 If anyone has ears to hear, let him hear.”
Mk 4:24 “Consider carefully what you hear,” he continued. “With the measure you use, it will be measured to you—and even more. 25 Whoever has will be given more; whoever does not have, even what he has will be taken from him.”

This one is about receiving His Word - but then what do we do with it?  Do we hide it - or do we let it show?  And - we will be treated as we treat His word.

Lk 14:28 “Suppose one of you wants to build a tower. Will he not first sit down and estimate the cost to see if he has enough money to complete it? 29 For if he lays the foundation and is not able to finish it, everyone who sees it will ridicule him, 30 saying, ‘This fellow began to build and was not able to finish.’
Lk 14:31 “Or suppose a king is about to go to war against another king. Will he not first sit down and consider whether he is able with ten thousand men to oppose the one coming against him with twenty thousand? 32 If he is not able, he will send a delegation while the other is still a long way off and will ask for terms of peace. 33 In the same way, any of you who does not give up everything he has cannot be my disciple.
Lk 14:34 “Salt is good, but if it loses its saltiness, how can it be made salty again? 35 It is fit neither for the soil nor for the manure pile; it is thrown out.
“He who has ears to hear, let him hear.”

This one is part of a section called The cost of being a disciple in the NIV.