Can I concatenate cells in a coumn if cells in another column return a
particular value?

e.g.

A B
1 1 Text A
2 1 Text B
3 2 Text C
4 3 Text C
5 4 Text C
4 Text C

I would like the formula to find all instances of the value 1 (one) in
Column A and then concatenate only those Rows in Column B

result: Text A; Text B

I will need to repeat this exercise for 40 particular values.

I cannot use macros, addons, or VBA editor.

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Thank you for your time

Novice