en_tn_condensed/mat/23/39.md

I say to you

This adds emphasis to what Jesus says next.

Blessed is he who comes in the name of the Lord

Here "in the name" means "in the power" or "as a representative." See how you translated this in Matthew 21:9. AT: "He who comes in the power of the Lord is blessed" or "He who comes as the representative of the Lord will be blessed" (See: rc://en/ta/man/translate/figs-metonymy)