MSSQL Query Value From XML Datatype

Query some values from a XML datatype result…

SELECT [datumtijd]
      ,(CAST(body AS XML).query('declare namespace ns1="http://totietoot.nl/example/person/1/0"; 
                                 declare namespace soapenv="http://schemas.xmlsoap.org/soap/envelope/"; 
                                 declare default element namespace "http://totietoot.nl";
                                 //soapenv:Envelope/soapenv:Body/ns1:Members/ns1:Person/ns1:ID'
                               ).value('.', 'nvarchar(100)')) AS ID
      ,(CAST(body AS XML).query('declare namespace ns1="http://totietoot.nl/example/person/1/0"; 
                                 declare namespace soapenv="http://schemas.xmlsoap.org/soap/envelope/";
                                 declare default element namespace "http://totietoot.nl";
                                 //soapenv:Envelope/soapenv:Body/ns1:Members/ns1:Person/ns1:Name'
                               ).value('.', 'nvarchar(100)')) AS Name

      --,[body]
FROM [DATABASE].[dbo].[Logtable] 
WHERE [kolom1] = 'waarde' 
ORDER BY datumtijd DESC