בָּר֣וּךְ הַ֭בָּא בְּשֵׁ֣ם יְהוָ֑ה בֵּ֝רַֽכְנוּכֶ֗ם מִבֵּ֥ית יְהוָֽה׃
Béni soit celui qui vient au nom de l’Éternel! nous vous saluons du fond de la maison de l’Éternel.
Ibn Ezra
and help you The suffices indicate a second person masculine plural direct object, masculine plural subject (as in “we bless you” [Psalms 118: 26]). But if you assert that He is singular — then let Him come and provide you with refuge against the coming calamities.