# But Ananias said

If it is not clear why the word “But” is used here, this could be translated as, “But Ananias was afraid, so he said.”

# God answered him

This could be translated as, “To reassure Ananias, God said” to make clear why God said this.

# to declare my name

That is, “to teach about me” or, “to make me known.”

# for my name

That is, “for me” or, “because of me” or, “because he serves me” or, “because he teaches others about me.”