142 Again the note of being blessed makes the key point of the passage about believing God.
143 This ὅτι (hoti) clause, technically indirect discourse after πιστεύω (pisteuō), explains the content of the faith, a belief in God’s promise coming to pass.
144 That is, “what was said to her (by the angel) at the Lord’s command” ( παρά A.2).
145 Grk “that there would be a fulfillment of what was said to her from the Lord.” This term speaks of completion of something planned (2 Chr 29:35).

In other versions

And blessed is she who believed that there would be a fulfillment of what was spoken to her from the Lord.”

Blessed is she who has believed that the Lord would fulfill his promises to her!”

Blessed is she who has believed that the Lord would fulfill what he has spoken to her!”

You are blessed because you believed that the Lord would do what he said.”

And blessed is she who believed that there will be a fulfillment to what was spoken to her from the Lord!”

And blessed is she that believed: for there shall be a performance of those things which were told her from the Lord.

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