delete the rows of my dataframe if not contained

Question

I have a dataframe, and a list of numbers(ages). I want to delete the rows of my dataframe, if the ages are not contained in my list.

Here is my dataframe as df

      Sex  Age
0    male   22
1  female   38
2  female   26
3  female   35
4    male   35
5    male   27

A list of numbers(ages)

list=[22,26,27]

Desired output

      Sex  Age
0    male   22
1  female   26
2    male   27

I have tried

for i in range(0, len(df)):
  for j in range(0, len(listofAge)):
    if(df["Age"][i]!=listofAge[j]): 
      df.drop[df.index[i]]


print(df)