My functions always return me undefined, it should be true

Question

It always return me undefined but i don't know why

const whitelistWord = isWhitelist(message)
console.log(whitelistWord)

function isWhitelist(message) {
  db.query(`SELECT * FROM whitelist WHERE guild="${message.guild.id}"`, function(error, result) {
    if (error) throw error
    for (let i = 0; i < result.length; i++) {
      if (message.content.includes(result[i].word)) {
        response = result[i].word
        return response
      }
    }
    response = false
    return response
  })
}

I want to scan a message, if the message include a defined word it should be return True