After the priest say "This is the gospel of the lord" the congregation says "Praise to you Lord Jesus Christ"
After the priest reads from the Holy Gospel, the congregation typically responds with "Praise to you, Lord Jesus Christ." This response acknowledges the significance of the Gospel reading and expresses reverence for the words of Jesus.
The Priest says, "The Lord be with you" during the Introduction rite and the Concluding rite.
Amen, which means agreement. If you are in a Catholic mass, the response is: "Praise to You, Lord Jesus Christ"
Oh, dude, after reading a scripture in church, you can just be like, "Well, that was some holy stuff right there." Or you could go with the classic, "Amen, brother!" Keep it light, keep it casual, and you'll be golden.
Both can, deacon is still ordained just a lower rank so if both present appropriate for priest unless he defers
A priest typically says "May God bless you" or "May the Lord be with you" when giving a blessing.
Roman Catholic AnswerThe priest doesn't just represent Our Blessed Lord, he is "another Christ", he presents Our Blessed Lord to whomever he is dealing with. In the sacraments, he doesn't say "may God absolve you" he says "I absolve you"; he doesn't say "this is Christ's Body" he says "This is MY Body". When he is functioning as a priest, he IS Christ.
No, the priest is an "alter Christus", "another Christ". When a man is ordained as a priest, he becomes more than the representative of Christ, Our Blessed Lord actually works through him. When the priest is consecrated the elements at Mass, he does not say, "this is Your Body", he says, "This is MY Body". He is speaking AS CHRIST. Similarly, during confession, he speaks as Christ, and says, "I forgive you your sins." We have Our Blessed Lord's guarantee that when the priest pronounces forgiveness, God is forgiving you.
You will find this Scripture in the "Parable of the Talents" in the Gospel of Matthew 25:21 & 25:23
Lord, I am not worthy to receive You; but only say the word and I shall be healed.
I believe only once in the Gospel according to St. John, where Our Lord Says, "I Am the Way, the Truth, and the Life."