In the book of Haggai God promises his peace on a specific house. What house is it?

This refers to the 2^nd Temple rebuilt after the exile by Zerubbabel.

Source:

Haggai 2:9

According James what is sown in those that make peace?

These people have the fruit of righteousness sown in them.

Source:

James 3:18

What did Jesus say when he met he apostles in the upper room on the first Easter?

Jesus first said the the Apostles and others. “Peace be unto you”

Source:

Luke 24:36

Jesus said he did not come to bring peace to earth but something else. What is it? There are two possible answers.

Jesus was bringing a sword in Matthew and also division in Luke.

Source:

Matthew 10:34, Luke 12:51

There is a commonly used benediction in the church “The Lord bless thee, and keep thee. The Lord make his face shine upon thee, and be gracious unto thee. The Lord lift up his countenance upon thee, and give thee peace.” Where is it found in the Bible?

It is a blessing given by God to Aaron in the book of numbers.

Source:

Numbers 6:24-26