Reformer John Calvin (1509-1564) provides a detailed, verse-by-verse commentary throughout the New Testament (except for 2 & 3 John, and the Book of Revelation).
He explains, "(God) therefore dictated to the four Evangelists what they should write that, while each had his own part, the whole formed one complete body. It is for us now to blend the four in a mutual connexion, that we may let ourselves be taught as by the one mouth." (Pg. 6)
He notes that "from these words (Jn 3:22) we may infer that John and Christ administered baptism by total immersion, though we must not worry overmuch about the outward rite so long as it accords with the spiritual truth and the Lord's institution and rule." (Pg. 78)
He asserts that Jesus "denies that any unbelievers are His own; and there is no wonder if the truth of God is distasteful to them but is embraced by all God's children." (Pg. 160) Later, he adds, "they are mad who seek their own or others' salvation in the labyrinth of predestination... when God has effectually called us to faith in Christ it should have as much force with us as if He confirmed His decree concerning our salvation with an engraven seal... Therefore every man's faith is an abundant witness to the eternal predestination of God." (Pg. 162) "The whole faculty of free will which the Papists dream about is utterly overturned by these two clauses (in Jn 6:45). (Pg. 165)
Calvin's anti-"Papist" orientation is clearly seen: e.g., "The Pope's gang of mercenaries accuse us of apostasy from the Church, because we have separated from the see of Rome. I wish we could as well protest with complete confidence before God and the angels that we are at the greatest distance from that cess-pool..." (Pg. 2) "The Popish theologasters are stupid to restrict (Jn 3:6) to that part which they call sensual, for Christ's argument must in that case have been the inept one that we need a second birth because a part of us is corrupt." (Pg. 66) In our own day the Pope shoots off his mouth that he is the vicar of Christ." (Pg. 141)
Calvin's commentaries are an important resource, particular for modern Reformed expositors.