My house will be a house of prayer

Luke 19:28-48
The triumphal entry: Blessed is the king who comes in the name of the Lord! Peace in heaven and glory in the highest!
If they keep quiet, the stones will cry out!
It is written, "My house will be a house of prayer, but you have made it a den of robbers. Jesus entered the temple area and began driving out those who were selling.
The chief priests, the teachers of the law and the leaders among the people were trying to kill Jesus. Yet they could not find any way to do it, because all the people hung on his words.
Jesus rides into the city on an ass, not a war-horse. He comes on a peace mission. Sadly, Jerusalem will have none of it, missing God's moment and embarking on a course which eventually led to total destruction at the hands of the the Romans in AD 70. The lament in verses 41-44 comes only in Luke.
The purging of the Temple, Mark says, was the next day. Jesus returned each day, holding people spellbound with his teaching, to the frustration of those who wanted him silenced for ever.
Why?
Jesus rides into the city on coat, it means peace with people. It is not war-horse.
Jesus is the king who comes in the name of the Lord! Jesus is king of peace and mercy.
Church is house of prayer and it is not for selling, business.
When heart is blind they don't know what are they doing. So they wanted to kill Jesus.
Jesus seriously sees the sins among people and temple area. So I should not tolerate sins in my heart
How?
Dear Lord, Please erase my sins, forgive me and let me be stand firm in front of you!