Problem with asynchronous nodejs

Question

I’m with a method in a class that calls the method another class and after that he gives a console.log of the return of this method. But this console.log is executed before the function call causing the result of the console.log be it undefined:

sign(data = {})
{
    
    let result = this.Verify.sign(data)

    if(result != 'ok')
    {
        return 'false'
    }
    else{
        //INSERIR PERSON E USER   
        
        let obj = {'desname': data['desname'], 'dtbirth': ''}

        this.Query.insert('tb_person', obj)   
        .then( (response) => {
            console.log(response)
        })
        .catch((error) => {
            console.log(error)
        })

    } 

}

---

async insert(table, obj){   

    let sql = `INSERT INTO ${table} SET ?`
    
    conect.query(sql, obj, (error, result) => {

        if(error)
        {
            return 'falid'
        }
        else
        {                  
            return 'ok'
        }
    }) 
}