Poured out upon us richly for shed on us abundantly, A.V. Which ( οὖ); viz. the Holy Ghost. It is in the genitive (instead of the accusative ὁ, which is another reading), by what [he grammarians call attraction.
Poured out ( ἐξέχεεν); the same word as is applied to the Holy Ghost in Acts 2:17, Acts 2:18, Acts 2:33, and in the LXX. of Joel 2:28, Joel 2:29. Richly ( πλουσίως); as 1 Timothy 6:17; Colossians 3:16; 2 Peter 1:11 (compare the use of πλοῦτος in Ephesians 1:7; Ephesians 2:7).
Through Jesus Christ. It is our baptism into Christ which entitles us to receive the Holy Spirit, which we have only in virtue of our union with him. The Spirit flows from the Head to the members. In Acts 2:33, Acts 2:34 Christ is said to have received the promise of the Holy Spirit from the Father, and to have poured it forth upon the Church.