Miriam and Aaron started complaining… The Lord heard their complaint
“Although Moses was the most humble person in all the world, Miriam and Aaron started complaining, “Moses had no right to marry that woman from Ethiopia! Who does he think he is? The Lord has spoken to us, not just to him.” The Lord heard their complaint “Numbers 12:1-3 (CEV)
What do you do when the closest people to you complain about you?
How do you react when it is your closest confidant that murmurs about you?
Moses left everything for God to vindicate him.
How are you handling the betrayal of people close to you?
Remember, Miriam and Aaron were one family with Moses.
Both of them were used by the Lord to support his calling.
When it is family, it hurts the more. 
Don’t be offended.
Turn it over to the Lord.
“So they were offended at Him. But Jesus said to them, “A prophet is not without honor except in his own country and in his own house.” Matthew 13:57
David also had a similar experience:
 My enemies are not the ones who sneer and make fun. I could put up with that or even hide from them.  But it was my closest friend, the one I trusted most. We enjoyed being together, and we went with others to your house, our God.” Psalm 55:12-14 
God also came through for David.
“Remember what the Lord your God did to Miriam on the journey after you left Egypt.” (Deut. 24:9)
Let God avenge you.
“Beloved, don’t be obsessed with taking revenge but leave that to God’s righteous justice. For the Scriptures say: “If you don’t take justice in your own hands,  I will release justice for you,” says the Lord” Romans 12:19
The Lord heard their complaint.