Part 2 is on the previous page,
Part 1 the page before that.
Here is a "clickable" Table of the available Midi Files for this Work:-
Warning: these Files were prepared from a Vocal Score similar to the main settings of the Peters Vocal Score, which has a slightly different Section Numbering scheme from the various Novello Scores, and wherein the phrasing in some sections - specifically No. 20: Behold the Lamb of God - may not entirely match the various possibilities of the Novello version.
|Messiah - Part 3|
|43: I know that my Redeemer liveth||None||None||None||None|
|44: Since by man came death|
|45: Behold, I tell you a mystery||None||None||None||None|
|46: The trumpet shall sound||None||None||None||None|
|47: Then shall be brought to pass ..
48: O death, where is thy sting
49: But thanks be to God
|50: If God is for us||None||None||None||None|
|51: Worthy is the Lamb that was slain|
That's the end of Part 3. Part 2 is on the previous page.
Part 1 is on the page before that.